The irony of underpowered champiosn with high winrates, vice versa
We have 2 core factors
- a huge amount of champions
- "the information age", where once something becomes top-notch people will instantly be informed of this and copy builds / strategies
This leads to a situation where whatever is strong at the moment gets continiously played and picked up by the majority.
Even with these superior picks and builds many people will fail, simply because they are inexperienced with the champion - or their "skill level" is too low to use him properly.
This leads to an ironical situation where some of the most broken champions have beneath 50% winratios. He-who-most-not-be-named being part of them (everybody knows which champion I am talking about, ironically I would get downvoted if I typed him his name here because of above popularity. What champion did you have in mind when you read the above phrase? You just tricked yourself and confirmed it ;) )
On the other side we have underpowered, thus underpicked champions.
People never see these champiosn being picked (since you basically see the same 35 champions every match) and don't know their abilities, their range and what they can.
Thus these underpowered champions have an instant advantage - by being underpowered and underplayed - when facing less experienced opponents.
On a side note: Players who dare to play these champions usually know to how play them well, possibly because they used them a lot back in a season where they were viable.
As a result however the underpowered champions have high winratios, while some overpowered champions barely reach the 50% mark.
And because of their winrates Riot refuses to buff these underpowered champions
Oh sweet irony!