Actually no, there are not a lot of games Miami won despite Tua.
There might be SOME games where Tua could have done more, but usually when Tua does not pull his weight, or is not playing, Miami loses.
This past weeks games against the Steelers with a rusty Tua is a good example, of one of those rare games where Tua could have done a bit more, but still did enough to help his team win.
The wins against the Pats, Ravens, and Bills don't happen with out Tua. If Tua had continued to play against the Bengals, knowing Tua's 2nd half history, Mami probably win...Same goes with the Jets and Viking games, Tua plays, Miami probably wins.
Tua is a winner, you can't deny that.