Speaking of winrates...
The top 15 Champs are easily pushing over 53% (oh look Janna is at 55% again lmao) and all the worst are sub 47%. I'd say there's a pretty good argument that in the current state of League, picking the broken Champs has damn near as much impact as player skill, if not more. Especially considering that the extremes push farther apart with higher rank, rather than narrowing down in most cases.