The series commonly explains how abilities work and how things happened, this entire fight implies raw strength and speed. The only implication for any form of time manipulation is the Chronos thing at this point since the rest was already addressed. And even then, the Chronos bit never even shows any kind of time manipulation, just that the attack was somehow instant.
Basically, the story commonly explains/shows how things work and the only explanation we get for this is raw strength and raw speed
If his abilities happened through time accel, he would logically get faster over time, since, y’know, acceleration of his own speed
I suppose we can give limited power mimicry to Zeus then.