I wouldn't worry about it, if the diff operates as normal and no weird noises I would leave it alone, The passenger side has the longer axle, the driver side has the stubbie so you would think it would be less friction. I cant count the ammount of rotations on it, but it looks like about one also, this is a vid from mine passenger side bad hub bearing.
You are WAY too awesome. Wow I cannot thank you enough for making that video. It looks pretty well like the resistance on mine.
I've just been a little paranoid about it as I did a bunch of work. Replaced output shaft bearings on front diff. Replaced rear end (completely). Did ball joints. Replaced a couple tires.
Along the way I somehow ended up with the truck pulling to the passenger side. I've been super discouraged about it. I'm rebuilding it and have a bunch more parts to replace before I get it aligned. However was SUPER careful about bushing preloads, torque specs, alignment (used laser measures, ride height, etc.). Hoping that the truck would keep a decent alignment along the way.
I've tore everything back apart, remeasured, recheck parts again and again and cannot find the slack or any defective components.
Then I rotated passenger side front tire to driver side, the pull followed the tire. Now it pulls the driver side. I think I have an issue in my tires. Never experienced that before.
Front tires are heavily warn 265/75/r16 BF Goodrich K02's. Tried airing to 35 PSI and then to 30 PSI with same issue.