Average washout rate when I went through the schoolhouse at XJT was 2 in every 16. Both the ones in my class were low timers. The first one to go was just due to attitude problems, the second kept having issues flying the sim.

I wouldn't say all low timers are guaranteed to washout- I've seen 500 hour guys fly as well as 5000 hour guys. At the end of the day, we can even train a monkey to fly this thing- hey, look at Saab, he's doin it!

They keys to making it through 121 training are preparation, attitude and persistence. With the right combination of those three you'll be fine.

Now go study your limitations and flows!!c