Just watched the third one, between browsing work doco.
Again, I don't think Fetzer was completely blown away. As Ginarley and others have previously said, Fetzer gets out so many arguments that some of them slip past Gravy and Pomeroo unopposed, and it looks like he achieves successful hits with these. Now, those who know the actual background of some of these arguments understand that they are incorrect or factually wrong, however due to the fact that Gravy and Pom don't pounce on them, it looks like Fetzer scores.
There were some brilliant pieces from Gravy however, that really convinced me he was on top of his game - much better than Parts 1 & 2:
1) where Gravy pulled out the photo of debris from WTC 1 inside WTC 6,
2) where Gravy pointedly told Fetzer to do a google search for "burnt cars" or "ladder 7"
3) where Gravy pulled out the photos from Judy's site showing how much rubble there actually was and Fetzer just completely paused and said "well, we'll add that to our data".
4) the number of times Gravy clearly pointed out that Fetzer had not done any actual research (i.e./ spoken with eye witnesses) and all Fetzer could answer was that they looked at photos and videos - second hand sources.
Point 3 was definitely a major kicker, it was very obvious it stopped Fetzer dead in his tracks.
I'd say that this third part was a definite improvement over Part 1, and a bit of a step up over Part 2. Pomeroo, I still think you needed to take a step back a little, especially since Gravy was so prepared and so ready to quash Fetzer like a bug. If Gravy had not been as prepared, then yes, I can see that you stepping in would have been advantageous, but Gravy pretty much had the upper hand here, and could have gotten more across in the time permitted if you had not engaged Fetzer directly.
I'd score it:
Gravy 90 Fetzer 10
for this installment.
Oh, and it makes me want to wander through the Hardfire archives.

Obviously, the show is not available here in Australia.
Cheers,
TGHO