The easiest things to tell are wrong with Aatrox

Fortunately, it's all just about the numbers. He's a juggernaut, but his numbers don't reflect that. Where the class is supposed to be able to build just one damage item and then full-on defense, his damage and healing just isn't matching what it needs to be.

Q is 80 base with only 80% scaling at rank 5, and the scaling is by rank, so it starts off weak when it shouldn't. W should be a 30% slow at all ranks, not 15-35% depending on rank. E Healing should just be 25% at all ranks. R needs to ramp up the blood well over 6s instead of 10, giving you 6 seconds with it full instead of 2.