Logically speaking

If two Elise's fight, making the same move at the same time, at the same level, they both end up dying (or fleeing) at the same time. If two Elise's fight, and one outplays the other, and neither gets a gank, and this process of outplaying continues, it should be assumed that the one being outplayed will be the first to die. If two Elise's fight and one is simply unskilled with Elise and get themself killed, it can be assumed they will feed.

In either scenario, only one of them can win the match, and one can lose. A draw, a win, a loss. Logically speaking Elise should have a 50/50 winrate. Why is it 42.5?

The answer is simple: She's not fighting Elise, and according to these statistics, every other champion has a better chance of winning the match than Elise. Every. Single. Champion.

Which means something is wrong with Elise.

Note: This applies to any and all champions. If their win ratio isn't 50/50, there is something wrong.