It's not fair to compare stats, 2 totally different eras. Both are similar QBs, #1 overall picks, struggled early, helped teams win 2 Sbs in short amount of time, won SB MVPs, neither made an all pro team.
So it isn't fair to compare stats but it's fair to compare everything else which you think supports your claim he isn't elite. Of course.
It's easier to win a SB MVP, again one great game can get you that award but you need greatness throughout 16 to win a league MVP.
Either way you're good
Doug Williams(and if he didn't win it Timmy Smith would have won that one), Larry Brown, Desmond Howard, Dexter jackson, Deion Branch, Eli Manning. None of these players were/are great players, they happened to have great games or make big plays in the SB. The award does skew towards QBs which is why Doug and Eli won their SB MVP awards but Eli is as elite as those other players were- elite for a day.
Did any of those players win two Super Bowl MVPs?