I don't think Eli was overrated, because I don't think he was ever regarded as top-3 or possibly top-5 in the league at any time he was playing, with Brady, Peyton and Favre (and Roethlisberger and Brees in some circles) all regarded as better than him at the time of his first title, and Brady, Peyton and Rodgers (and again, possibly Brees and Roethlisberger) at the time of his second SB.
And in those Super Bowl years, Eli had 15 TDs vs. 2 INTs in the playoffs and went 5-0 on the road, so it wasn't 2-3 great passes.