Losing top targets Boss and Smith going into the season, playing in front of a terrible offensive line with no run game (finishing dead last in the league!); Eli has carried the Giants this year. Nicks is very shaky at WR, not very smart and has drops at terrible times. Cruz has been a savior this year, but Eli has to get some credit in his rise being able to get him the ball. Three guys unheard of playing tight end and fullback off the scrap heap and Eli has managed to turn those guys into weapons.
How do the Giants have 'less' on offense than other teams? Nicks and Cruz are elite talents at WR, and a healthy Bradshaw (which he wasn't for most of the second half) is a fine back. They're not as deep as the Packers or Saints but they do have weapons. Hell, all Stafford has is Calvin Johnson and a bunch of second-tier guys with zero running game and he threw for 5000+ with big numbers.
If you're going to vote on most valuable based on how many games the team would win without them, it's almost impossible. We don't know how many wins the Giants would get without Eli, the Saints would get without Brees, this version of the Pats would get without Brady, all we know is what the Colts got without Peyton a year after getting ten and being in the playoffs. So by that standard HE should get the MVP Or Cutler, look at how good the Bears were with him and how horrid they became without him, and their best receiver (whoever that is) would be the #4 guy on the Giants.
Without a doubt, this year shows how elite of a quarterback Eli is.