Having many people come in your name and say that they are you is indeed a very unexpected event. I certainly don't ever expect this to happen to me, and indeed, I don't expect this to happen to even the greatest leaders throughout history.
Yes, but those examples did not believe they were the "Son of God". Also, don't forget, the actual writing was done by Matthew some years later while he was trying organise followers of christ, we don't know if someone called Jesus actually said that.
Can you imagine George Washington saying that? Or Ghandi? Or Alexander the Great? Or Donald Trump? I can't. It takes an unexpected amount of hubris to say "many people will claim to be me."
I do accept your point, but I don't think the claims any of those people made about themselves equate. We are talking about someone with a (the?) Messiah complex, these guys (Matthew and/or Jesus) were trying to set up a new religion to supplant Judaism. My Encarta defines hubris thus;
2. Excessive ambition: the excessive pride and ambition that usually leads to the downfall of a hero in a classical tragedy.
I think that's close enough!