Probably hypertrophy, if only because it's only for three months (and because that's what Wendler says). People started noticing a difference after about two months. In any case I think that when we're a beginner both can improve.
Like I said, I was eatling LOADS, probably getting towards 5000 calories. This meant I never felt trashed from the workout, but as you can see in the attached pic, I got fat. The pic shows the before and after for the programme. I wouldn't eat so much if I do the programme again which is an idea I'm toying with for some time after Christmas when I'll be a bit stronger.
I really enjoyed the three month challenge though.