Messi wouldn't last a second in "old game". Game was too physical for him back then.
Players are stronger now than back then. Maradona lasted so I don't see why Messi wouldn't.
Players are stronger now as Mads said, and get away with much less. Just because Pele and his team could of hacked Messi off the ball and not been given a card doesn't make it a skill, it just shows how football has grown from an 'almost as bad as rugby' physical contact game into a game of skill and athleticism. Pele wouldn't last a second nowadays, Emile Heskey would pwn him. Messi would run rings around Pele's old team, admittedly before being destroyed in an explosion of broken bones and torn muscles. So well done Pele for scoring 1000+ goals back when everyone had a scoring record of near 1:1. There's a reason very few people don't have ratios like that anymore, and its not because Pele is 'teh pwnage'.