Why is Aatrox feeding on the PBE?

His name is Boris.

It's called new abilities and no one is playing him right, that's how things go on the PBE. Just give it a few days.

People need to adjust to the changes.

I've tried him on the pbe. His abilities are hard to get used to, especially the Q+E that you NEED to be able to do consistently if you want to get through laning phase in one piece. His abilities are clunky af(except his ult :P). He is also very punishing due to his long cooldowns and more focus on abilities combos. On the contrary, his abilities themselves deal tons of damage if combo'ed correctly.

Aatrox? I don't know who you are talking about. That guy is definitely not Aatrox.

If I had to guess based on how his new kit works I'd say it's strictly weaker than live Aatrox but PBE is a bad measure of balance.

So he's not much different from live afterall?

because he's a worse version of riven. Rivens go either 10/0 or 0/10