In general, I would agree, except that what's on screen comes across as decidedly choreographed rather than actually practical and purposeful (IE: in terms of defeating your enemy).
TPM's sabre work was probably the best because while it was flashy, it also at least seemed somewhat practical, given the threats they faced. The twirly stuff worked fine if you're trying to deflect a constant barrage of blaster bolts.
The trouble with the sabrework against another sabre-wielding opponent is that the weapons dictate certain angles of attack. Even with an omni-directional blade, you still aren't going to do stupid stuff like spin the thing behind your back or do a pirouette, yet that stuff is ALL OVER the prequels. Sure, it looks flashy to have this whizzing blade, but what's the point? Luke's little pirouette in ESB only really happens once, and it's not that big a deal. Noticeable, but a momentary conceit for the sake of the flashy. The PT, by contrast, is laden with that kind of pointless -- no, SUICIDAL -- stuff.
Claiming that it's because of superhuman reflexes doesn't really help either, because they're only facing off against other opponents with equally superhuman reflexes. And I'm sorry, but spinning your sabre behind your back to switch to a left-hand grip leaves YOUR ENTIRE FRONT EXPOSED TO ATTACK AGAINST AN OPPONENT WITH SUPERHUMAN REFLEXES when you could just...you know...keep the blade in front and simply swing with yuor left hand.
Like I said, the spins make more sense vs. a blaster. But against another opponent with a blade? Not so much.
To me, the final fight, after the control room sequence (which does seem genuinely intense and lethal) comes across like those old kung-fu-theater movies where the fighting was more just flashy dancing than fighting. Hit-hit-hit-PAUSEFOREFFECT-hit-hit-hit-POSE, etc.
Now, I also recognize that real sword play is often a somewhat duller affair. FAR closer to Obi-Wan vs Vader in Star Wars. So I don't necessarily need my movies to be 100% faithful recreations of actual sword-play.
But to me, the sword play looks like "And hit and one and two and crouch and four and five and block-seven-eight-hold-it-aaaaaand BACKFLIP! Wait, stop, stop. Cheryl, what was THAT? You look like a pregnant cow. Now come on. Let's try this again. From the top girls aaaand...."
It's just dancing. Pretty, flashy dancing, sure, but not swordplay.