Part of why Yasuo, Zed, Anivia, Malz, Ahri are good midlane
They can get 70%+ CS with their eye closed.
Giving champions ez cheap wave clear that starts at lvl 1-2 means you have given the champ a bunch of free gold.
Just lose to a Yasuo not because he was good. I killed him over and over in lane but because he could CS a wave faster then I could kill the casters. So even tho I had the gold lead from kills it was canceled out by his CS gold over me. That and his One item power spike to 1v1 any caster.