He is regarded as being one of the best shot blocking GUARDS of all-time, second only to Michael Jordan. If you look at Wade and Jordan's total blocks in playoffs, Wade has a chance to actually be the #1 shot blocking guard of all time during playoffs. He will either end up #1, or a close #2 (which he is right now).
Side note: How many other times do you see a 6'4 rim protector. It's insane, Wade will stand and guard the paint at times like he is the rim defender for his team, at a respectable 6'4