I do remember Bradman himself once did dignify the fairly silly question "Would you have scored as many in modern cricket?" once. He essentially said that comparisons were tough because pitches back in his day were, aside from the stickies (which he said were fairly rare), superb for batting. He also said that the greater number of truly fast bowlers changes things too because it was rare to have three quicks and a spinner or four quicks in a side back then. Plus there's the greater planning put into bowling/fielding/field placements/fitness, etc. and he did say that no, he would not have scored as many as he did back then.
"But", said Bradman "I still would have scored more than the chap who came second."
As for the question at hand, too difficult to say for sure, too many variables to take account to come up with a definitive answer. Bradman was a freak for the time but it's widely accepted that was essentially because he had a similar professional view to his batting that most batsmen to these days in a time of amateurs. Would he stand out as much today? Who knows? I'm definitely not in the camp of those who think he had diety-like batting powers, though. He was a man just like any other. Bradman, I believe, was just far ahead of his time in his treatment of the game as being more of a profession, something to work at, not just to play.