Machoke is obviously a good support option against things like Espeon and Decidueye.
Machamp is actually interesting too though. I could see a deck that runs a 2-2-1 line with these cards, then if they lose a GX attacker they can teammates or ultra ball and pull out a Machamp for a revenge kill. This thing can situtationally hit over 200 with a choice band for 2 attachments which isn't bad. Submission isn't terrible either, the 3 F cost is annoying but you hit a solid 180 with band, 200 with band/strong energy or kukui.
Tauros/Machamp seems pretty strong in particular since Tauros is basically designed to trade with EX/GX cards then go down, then once it goes down you drop a Machamp to knock out whatever killed it, and even if they revenge your Machamp you're up on prizes. And at 160hp it's a pretty big ask to revenge it the next turn after losing 2 pokemon unless you're running mega mewtwo.