I don't see much similarities, tbh. Unlike the Rockets last season, the Spurs have a real, elite #1 player on their team, capable of being the best player on the court no matter who he faces. The Spurs also have a #2 capable of going nuclear and be a #1 option on any given night, plus 2 other guys (Castle and Harper) capable of running an offense as primary ballhandlers. Add to that 3 guys (Vassell, Barnes, Champ) capable of giving you 20/30 pts if they are feeling it.
Also, unlike the Rockets last season, the Spurs aren't inflating their record by going balls to the wall during the regular season. In fact we haven't even be able to field an entire roster for more than a couple of game and we're still the 2nd seed in the West.
The Rockets always felt like a farce, that's why they had to trade for a 40 year old to be their #1 option. This Spurs team is different, they are building something real.