Hax/versality advantage that one combatant would have over the other was already taken into account in this sentence below.
Just a tidbit regarding Apo's durability here.
In fight scenarios, a character's durability and AP/destructive ability typically scale directly to each other, except for certain cases where a character's durability (including defensive abilities/barriers) is showcased. Apocalypse demonstrated this effectively when he dismantled Quicksilver in less than 10 seconds after halting the latter. It was proven clearly in the fight (if it was even one) that Apocalypse was stronger than Quicksilver in that scene, both in physical strength and durability.
+
Apocalypse's ability to manipulate the terrain to halt Quicksilver's movement, thereby instantly removing Quicksilver's speed advantage, is further evidence that special abilities used by a character can play a role in negating a speed gap.
Apocalypse was physically getting blitzed when Quiksilver was zipping around him and only his powers were able to stop Quiksilver in his tracks.
Apocalypse being slower than Quiksilver didn't hinder the much from the former using telekinetically induced terrain manipulation (from the looks of it) against the latter since terrain manipulation would only require its user to track someone's movement & current location (not always with their sight either) as a requirement before the ability can be succesfully applied against the target.
It's vastly easier to track something that's moving at a specific speed (and it gets easier when that "something" is closing in/moving away from the line of sight) VS actually moving at that speed.
- Ex: tracking a car moving at you 50 kph from a distance away VS actually physically moving at 50 kph.
I'll respond to the AP/Durability vs Speed gap soon.