Bullshit.
He's very obviously a much better tackler, covers more ground, is stronger, faster, is excellent with both feet, strong in the air, and can drive forward with the ball.
His weakness right now is his unwillingness to play the difficult passes that can split defenses open, and when he is occasionally caught out of position.
I would pick him over Gibson right now.
Rodwell does not cover more ground. He's always one of the lowest in the team in that department. His work rate and defensive awareness are abysmal. As you've said he's also unwilling or unable to make any penetrating passes and his scoring record is pretty poor.
Gibson has been rubbish but he obviously hasn't played a lot of regular first team football. Rodwell can't really say that. I'd rather have Osman in the team ahead of both.