SCH needs some nerfs

[Brightamethyst]

If we assume more or less no doubles which I think is fair that means there is a SCH present in roughly 77% of uploaded logs.

I feel like this speaks for it's self. It is completely broken.

There are only three healers. Even if there was perfect balance you'd expect SCHs to be in ~66% of groups (assuming no doubling up.) SCH numbers are higher, but not THAT much higher. It's definitely strong, but "completely broken" seems like overkill.