JLP basically got ARH to incorporate a few tweaks and changes to further improve it based on their years of experience specifically on our platform and what they've seen to work best first hand on many many trucks and many many exhaust combos over the years on our exact trucks. I'd go with that over the regular version. Also seeing the tips, the regular ARH ones are nice, but the version that comes on the JLP ARH is even nicer. I got mine before they switched from bassani to ARH, so my ARH is the regular setup. I may try to at least upgrade the tips at some point.
As for vid comparisons, I think it'll really be hard to tell a difference from video from the regular ARH to the JLP spec ARH. Heck even in person it may be hard to tell, not to mention as you said other things can affect the exhaust tone as well between different combos. Either way it'll sound great.