If I had a penny for every time one of these OP champions won a game for that team I would be rich.
Fiddle has a crazy amount of CC and a crazy amount of damage, there is no way to retaliate on a 1v1 when you've been feared, silenced and drained. He needed to be nerfed not buffed.
Mordekaiser is manically tanky with crazy damage... once he has been fed, which is quite easy he is basically unkillable, no chance with a 1v1 (I'm speaking with most champs here).
It's just such a pain looking at the enemy champs and thinking "they've won this" because they have a Mordekaiser or a Fiddle or, heaven forbid, both.
Please notice this RIOT and please do something about it.
I will also add that I have played with both these champs in the past and needed only 1/10 of my usual LoL capacity to play either... Terribly easy, no skill, overpowered champs. (And yes I did just lose to MK and Fiddle)