Boy do I love the early game 501st

https://preview.redd.it/33joe1xv688e1.jpg?width=2160&format=pjpg&auto=webp&s=5dd9c5036415bd865f0d3055f3fe8d94f696a3db

I just recently decided to put my no GAS 501 on defense, and it’s been getting holds 9 times out of 10. I’m guessing people don’t know the Rex lead, or go to heavily on AOE. But why do these boys hold so much? (Carbonite III)