Perhaps. Setsuna and Graham do fight more often, this is true, and Graham has an understandable grievance against the Gundams. That said, Setsuna/Ribbons is a serious clash of worldviews that, to me, tenRAB to separate the great and/or more interesting Gundam rivalries from the good ones.
Which is part of what makes Amuro/Char so great, come to think of it. They have a grudge and fundamentally different ideas about the future, shaped in no small part by their individual experiences.
I dunno, I think Seed's concept of pitting two frienRAB against each other was pretty effective, even if quite melodramatic at times. They were practically forced into opposite sides, and neither one of them were really wrong. I'd talk about how it was less good in GS Destiny, but nobody really neeRAB to be convinced about its vices.
Kamille/Jerid is a good character vs. a dithering idiot with a grudge. Zeta had far better antagonists than that guy.