Pushed? By who and When? Over what?
Pushed at the time of the incidents? Well, if that's the case and he's covering up for things now, then he's a liar.
Pushed during the hearings? Well, the purpose of the hearings was to establish facts. They are supposed to push when the facts are not forthcoming.
"Pushed" as in he was naked and someone pushed him.
Errr... not really.
First of all, in the Reade/Biden case, you have the issue where the "story" that was told has shifted significantly over time, going from inappropriate touching to penetration. And while she claims she "told people the true story" at the time, those people have not really been vetted. One person is anonymous, one (her brother) himself has changed his story, and her mother has died.
Memories are constructed in the brain, not recorded, which is precisely why the dick-in-face episode was questionable. The alleged victim did not recall the incident until "probing" her memory; after being told by others it happened, she "remembered" it. There are no versions to compare Dr. Ford's accounts over a thirty-year stretch, so it may only seem as though her story has not changed when it has just recently matured/crystallized. Also, the witnesses she alleged could back her up never did.
In the case of Biden, I'm naturally suspicious that he grabbed a woman by the pussy (and penetrated her). It's just sooooo... on-the-pussy (and more), which is why I initially dismissed it. Unfortunately for Joe, one of the accuser's confidants is recorded calling into Mr. Suspenders' TV show in the early 90s.
I probably would not have believed Lewinsky if not for the blue-and-white dress.
Secondly, you have the nature off the defendant. During his hearings, Kavanaugh have said things that were pretty obviously a lie... his definition of a "devil's triangle" (which was contradicted by his peers at the time) as an example.
While I certainly don't think Biden is perfect, nothing that he has said seems to rise to the level of deceipt that Kavanaugh's statement did.
Biden has not faced similar pressure. What if it turns out that there is a record of a complaint filed with Biden's office? Then his campaign's statements will start to look deceitful. By the way, something can only look deceitful if there is pressure. Deceit holds up to mild scrutiny -- that's what makes it deceitful.
Thirdly, there are some aspects of Reade herself that might make people question her credibility... that she was a Sanders supporter, her little love letter to Putin (followed by her attempts to cover it up), that she made pro-Biden statements after the assault (It is not totally unheard of for a victim to maintain that type of attitude, but to many people it seems strange... "I was assaulted... but I'll say positive things about my attacker... now I'm telling most people that I wasn't actually assaulted...but now I'm going to support his opponent and I will say more things about the assault").
Compared to that? Ford has lead a pretty straight-forward, unremarkable life. She appears to be fairly apolitical, without any of the controversies or weird missteps that have plagued Reade.
There are timing issues in almost everyone's story, especially when it garners media attention; there are skeletons in everyone's closet, including Ford's. I'll say more or less exactly what I said about people impugning Dr. Ford's timing: So she cooks up these allegations years and years ago, tells others, bides her time, waiting until the perfect moment to ruin a man's career?
Another way of looking at it is that each of these women waited until their alleged attacker was nominated for the highest position in his profession. But the timing of the accusations is probably mostly informed by #metoo culture.
Then there is the calendar... Kavanaugh supposedly brought it up as some sort of defense, but ironically it actually provides evidence against him... he claimed that he recalled no party as described by Ford, but the calendar itself has an entry that describes the exact type of party that the attempted assault happened at. Far from being an alibi, it actually seems to bolster the accusations against him.
Ford could not remember much about where or when the party took place. Kavanaugh's calendar showed he attended a lot of parties.
So, to summarize:
In Ford/Kavanaugh: a claimant with a relatively stable story made allegations against someone who during his defense, perjured himself, and then brought evidence that actually provided evidence to support the claimant.
In Reade/Biden: A claimant with a questionable history made allegations that appear to have shifted radically over time, against someone who is admittedly flawed but who has no other similar allegations against him.
So which of those 2 cases sounds more solid?
OK, counselor.

The problem is in the characterizations themselves. One of these women has a "questionable" history and the other does not? Kavanaugh perjured himself and Biden has not? Biden has not been grilled by Senators and the media.
That does not necessarily mean that Reade is lying about the assault. Just that her allegations should be viewed with a little more skepticism than those made by Ford.
She has more compelling evidence backing up her account (a call-in television show). In most of these cases of sexual misconduct, the woman identifies people she told at the time that it occurred. Given the personal nature of the incident, she's naturally going to tell close friends and loved ones. Naturally, we are going to question the honesty of those friends and loved ones.
Here's the main problem with your comparison: We're at different points along each timeline. You're comparing a movie that has more or less finished to one that's still in the first act. Ford's accusations against Kavanaugh were grounds for further investigation and probing.
The credible accusations against Biden are grounds for more digging. Someone needs to go through his records. If the woman who managed Biden's office is correct, then investigators will not find anything.