You're right. There are going to be those calls that if you look at it a hundred times or by a hundred different people, there's the chance for making a legit case for either side 50/50, right down the middle.
So if you can't tell beyond a shadow of a doubt after looking at all the angles, then let the call stand as made on the field and back to the game...it drives me most nuts when calls like that get overturned after 3-5 minutes looking at the same replay 20 times, and then listening to it being discussed at the water cooler the next day, week, month.
What was the game where someone scored a TD to win, or maybe it was a non-TD to preserve the win for the other team (I forget...Lions, maybe?) and you could stare at the slow-mo the rest of your life and come no closer to telling me what the "correct" call was. Yet if I recall, the ref. overturned the call on the field "giving" a team a W based on his interpretation of the play..(was the ball slightly moving in the receiver's hands as one of his two dragging feet touched the white chalk of the end zone??? Drives me freaking nuts!)
Another game (I think a Monday Night Football, Pitts. vs. someone) Hines Ward dives for a long ball, clearly makes the catch and then gets up and runs the rest of the 30 yards for a TD. Replay shows that the diving DB's shoe lace may have touched Hines' leg as Ward got up. The announcers are watching every angle, super slow-mo and they declare TD...nothing to give "clear" visual evidence to overturn the called TD on the field, but appearantly the ref. saw enough in his mind to change the call.
Different subject, but while I'm venting: Dumbest rule I've ever heard
Again, I apologize because I forget the game it's from, but if a WR catches a ball near the sidelines he needs 2 feet down in bounds with possesion of the ball. This could be diving out of bounds as long as the WR at least drags his toes of both feet (we all know this). YET if a WR catches a ball going backwards out of bounds (i.e. a jumpball near the sideline), then he does not simply need to tap/drag his toes from both feet. He needs to get his heal in as well...One entire foot and the ball of the front of his second foot landing in bounds, but the heal of his second foot landing on the line is a non-catch...why? No idea.
I know this has nothing to do with refs and judgement calls and instant replay, but I LOVE Football: NFL, college, etc. and this year in particular...in the NFL in particular, it seemed to me that the referees did more to insert themselves into the spotlight in a negative way (is it ever a positive when the refs are the story of a game) and robbed me of quite a bit of the njoyment that I usually get from this game.
Again...just a really frustrating subject for me, especially considering the $$ generated by the NFL...please, please, please (owners, refs, etc.) do something to make this better because the situation as it is stinks IMO.