There's like, zero reason to say this is AP. If you want to give it anything, it's at best a high end dura feat for his gates.
Also I'm not seeing a reason why it's assumed he saw them in slow motion. He just reacted and brought them away from Earth before their punch collided. Heck, it was only just barely too, as their fists collide like the instant they're teleported. It would scale to his reactions sure, but saying he views them in "slow motion" seems like a decently big assertion to make, since that just puts Blast at a speed level that should have no problems reacting to Garou, and he clearly had some trouble.