Right so I just want to note first that Bart with the entirety of the speed force could match Zoom. So Wally running fast enough to destroy it being faster than Zoom is not as inconsistent as it sounds
The other thing,.... he literally destroyed the ability of ALL Flashes to time travel with that last burst of speed (Barry being BTFO there in the background..) because of how badly he effed up the speed force
But... he himself is somehow still time traveling... in the mental asylum he was placed in after these events... where he might have killed off several other heroes. Also had an ominous mention in DD clock...
Basically this is all too recent to judge if that's his new level but imo they're about to Parallax Wally West...