For Servants who abuse their buster oriented decks (hello all zerks aside from Vlad), Gil CE would be more useful imo. Gilgamesh, Karna, and prolly most of the 'Buster NP + 2 Buster cards' crew would also appreciate it. I find Golden Sumo to be better for Servants with mixed decks/need the starting NP gauge as a jump start. Aside from Emiya, I'd simply just slap it on anyone who I want to be dps.
LB Golden Sumo vs Partake with the King?
As stated, which will be better? For example, which is better on heracles? And what type of servants benefit best from the CEs.