From a guy who could give a rats *** who won the game - let me try one last time to explain the differences here.
1. Tell me the last time in an NFL game when a play was "booth-reviewed" that the Referee did NOT make an announcement on field to that effect? This wasn't a pre-season game, heck it wasn't even a regular-season game, it's the friggin SUPERBOWL - you don't leave these things open for speculation. The outcome of that play was uncertain with the game still in the balance; why was it not reviewed in painstaking detail? Remember that they'd get an additional 15 yds tacked on as well after helmets were ripped off.
2. For a QB who is in the pocket, with the ball still in his hand, "loss of control" is not an issue if his arm is still moving forward and his fingers are touching the ball. Arm forward, no ball = fumble. Arm NOT moving forward, ball moving forward = fumble. Arm forward, with ball, ball moving forward until it leaves the QB fingers = incomplete pass.
I think Warner had no semblance of control of it, but the rules don't allow for that to be anything other than an incomplete pass. Under the existing rules, it should have been incomplete. Like an election - if you don't like the rules, get them changed - until that point the existing rules should apply.