Originally Posted by Fat SJCrew
I think you're a bit confused by what he said. Gliscor and Slowbro are probably apart of the four he mentioned, along with Scizor, the only 'priority' in OU that's both relevant and can take on Terrakion. Even a max/max Relaxed Forry can't take two CCs from that thing, and most faster checks are obliterated switching in. Hippowdon has a small chance of being 2HKOed with just rocks up and has to be perfectly healthy in order to be able to take him on. He's technically a counter, but hardly reliable.
I'll debate you on whether or not he's a little too difficult to deal with, but he's perfectly right in saying that CB Terrakion is very hard to handle overall and you can count on one hand the number of things that can actually beat him without dying on the way in.
Terrakion is not just weak to Scizor's BP. With Terrakion's typing, he is weak to fighting priority as well. After hazard damage along with prior damage Terrakion is not going to like to take a Mach Punch.