Even if we go for it and make it the first time and kick the field goal the second time, the result is not going be different unless you assume a touchdown, which, given our ability in the red zone this year, is not a particularly safe assumption.
I'm puzzled by the "winnable" comments. Yes, it was possible that, if everything that we did wrong didn't happen, that we win the game. But just looking at the margin of victory is foolish. Navy clearly altered their defensive and offensive approaches when they felt the game was in hand. My eyes tell me that, even if we played an A+ game, Navy wins 8 out of ten times.