They seem quite similar tbh. One differance I can spot out is that the Asus has quite a bit better graphics card than the Pavilion. Personally I would go for the Asus, it's cheaper, plus it has a better graphics card and nothing is really worse on the asus than the HP
Definitely the Asus. The processor and gpu are better, which is the main thing when gaming. Asus makes good quality laptops, but I could never say the same for HP since they have been shown to have one of the highest hardware fail rates of any laptop manufacturer.