I think I can sum this up pretty easily...
- Yu has better stuff than Keuchel but he struggles using it.
- Keuchel doesn't have the stuff Yu has but he is WAY better at using what he has. He's an absolute artist on the mound.
- McCullers has better stuff than both of them but he hasn't quite learned how to use it effectively. He's close but right now he's not there yet.

