At the end of our apptitude tests we got a talk on what the training would be like and he said it wouldn't make a difference wheter you have had previous experience or not because you had to do the flight training anyway,plus the warriors are a lot different to the 172 and you're going to be tested on them,not cessna's!
But I find it hard to believe it wouldn't help even a small bit.
After all that I haven't answered your ceist,sorry!