Dunno but I'll take a shot ...
If we're talking about speed, left appears slower. 
Right is powered vs Left on battery so maybe the processor is slowed down?
Swipe speed matters I suppose.  What happens when you give a "toss" with a quick swipe?
I'm assuming there are no dissimilar background apps.
FWIW my Tab E is a tiny bit faster but I'm probably not replicating all the conditions.