I'm mostly curious to see how they simplly stack up next to TBS 6" figures since the scales are to be relatively the same.
I like this shot of the Stormtrooper next to the, well, Stormtrooper. Shows the significant size differences.

There are areas where you can see both figures are flawed... I think aesthetically speaking, even with the joints being somewhat visible more than the TBS figure, I tend to lean to the Revoltech figure's overall look. I think it's more accurate looking.
Proportionally speaking, I'd give a slight (very slight) edge to the TBS figure. I think the articulation style on Revoltech elongates some of the limbs a tad more than I'd prefer, but it's so slight it's not a huge deal.
I think the TBS Trooper's blaster is more accurately scaled? That's a tough one really, actually.
I love the color and "shine" to the Revoltech figure overall... Way cooler looking, and I think sculpt wise it's crisper and more accurate (especially the helmet).
He doesn't match that Vader's height well. I wonder how he'd stack to a TBS Vader though?
He looks great next to Chewie, but he makes Luke look almost like a child, haha. "Are you a hell of a lot too short to be out this late without a parent or guardian?"