You know, most buffs/nerfs are actually too small to make a difference, but because of the psychology behind believing it does make a difference, your winrate with them will actually increase/decrease accordingly simply because you believe it matters.
Well, good luck for you. I have an actual image of one of those people complaining to Rito.
https://67.media.tumblr.com/6ae6d5d1e96ae3b25edb91ce95d38666/tumblr_mlkf0pWOiX1s0x8bxo1_500.gif
Me with Kog'Maw right now... [zombie-nunu-bummed]
Please be gentle rito
get ready, here comes the: "if u main them u should be good enough to deal with the nerf"
Once a year a horrible, HORRIBLE nerf appears for him on the PBE, and I squirm and cry for a whole patch, and then it gets removed from the PBE and life goes on as usual.
It's scary.