This might give you an idea of how useless was Sampras' serve on clay. (Please note Agassi was nowhere near as good as Nadal on clay).
I mean this confirms everything I've been saying.
Agassi was returning almost everything, even hit a return passing shot winner against Sampras first serve. So it does confirm the serve is somewhat nullified on this surface (I thought this was common sense but apparently not).
So if Agassi was hitting winners and getting almost all the serves into play, Nadal standing far back with time and his speed would get serves back much harder with more spin, heavier ball etc.
Then I said once the ball is in play, Sampras is second favorite every single shot. There is nothing in this video to suggest otherwise. He is going backwards when hitting his one handed backhand and landing it short, making many unforced errors. Especially longer rallies in which Sampras has to run to get to the ball, he is hitting the net or out, or if it's in, it's easy pickings for Nadal's groundstrokes.
I can't see any other outcome than a Nadal win here.
I'm still waiting for an explanation how Nadal doesn't win this, because that video showed everything.