His #'s only dropped year 2 because he had a come to Jesus moment with LeBron in the off season where he told Bron he needed to take over the team and that wade would be the sidekick. Wade dominated in the playoffs despite a "lesser" role.
I am not taking credit away from LeBron...he's incredible. IMO wade wasn't really out of his prime until year 3 with bronnie. LeBron still won a title against San Antonio when dwade IMO first really started to decline.