What other SFs primarily operate from post-ups and the midrange?
The Spurs are antiquated, but Kawhi is a part of that equation. I'm just saying that talent wise, the Spurs are better than the Rockets, and if Kawhi had a more "modern" style, Danny, Patty, and Manu would be bigger threats than they are. Harden would probably turn someone like Bertans into a nightly 15ppg threat.
Again, antiquated doesn't mean ineffective. It's entirely possible the Spurs win through controlling the boards and paint and wearing out the Rockets through length and size, old school style. Thunder almost did it to the 73 win Warriors last year. But the writing is on the wall for that style as the NBA "progresses" Pretty soon, it won't be possible for such a style to win.