Why is it everyone is treating the missed field goal like we would of lost

Why is it all I hear is that the field goal was the only reason we won the game?

Yes it won the game for us!
But we were dominating the second half and if we went into overtime we still had a better then average chance of winning this game!

Same thing with the Cleveland kicker missing at the end of our game. It was an attempt to tie and many people treat it as though we would have lost had he made it.