I am not sure, we have a fair chance to beat them.
There are many teams in the playoffs that have one guy that makes it all happen for their teams.
SAS - Leonard
HOU - Harden
BOS - Thomas
CHI - Butler
IND - George
OKC - Westbrook
LAC - Paul, sorry Blake, I am not a believer anymore. Drink on me when you come to Dubrovnik again, just show me this post. 
https://youtu.be/qjqcgSEVtsg
I have already seen all of these 1-star teams get silenced in the playoff series. Once that 1st option is stiffled, Arizas, Danny Greens, and such, although fine players, they don't have the same shots nor chops to make the same difference as they did in the regular season.
Things like Hardens wrist or an injured specialist could decide the outcome of that series. And as we all know noone can predict those, on the 1st look smalish, but certainly very tangible losses.
And these single stars also get tired come playoffs. It is more apparent on the defensive end, as the are late on reactions or don't show the neccessary effort.
I dont think they are far ahead of us, if at all, but I do believe they have a better, bigger, version of James Harden.
Lets hope we see the outcome in the finals.
San Antonio has Aldridge
I guess we have a different criteria on what a star is. To me he was one, but not anymore. The fact that he can't play adequate defense as a lone big on the floor does it for me.
You mentioned Aldridge not being a star because of defense. Yet you have guys like Thomas and Harden on your list of stars. 
That's contradicting. You are also mistaken if you think Aldridge is in the same berth as the Arizas, Danny Greens. You are also forgetting the fact that, under your description, almost all of the playoff teams have a lone "Star", so what happens when these teams face each other? That's right, those Arizas start to matter. The playoffs don't start on the finals you know.
There is a huge difference in what IT or Harden do for their teams and what LMA does. Both of them are hot 9/10 games if guarded by a single coverage. That translates to them being defended by 2 or even 3 guys when it matters the most. I have very good rememberance of IT slicing into paint while being guarded by 4 red jerseys at times in the last years playoff loss. LMA is a guy that scores well on postups and midrangers, single coverage, unless he has a missmatch after a switch. Also worth noting is that bigmen have more defensive resposibilities than guards or wings and that LMA can't inititiate an offense. He is, in a way, only an offensive player in half court set as he can't contribute to the modern running game. I took Blake out of the star tier and he is IMO a notch more valuble player than LMA. There are only 15/18 stars in the league, and I don't have a 50 star players value system. Probably there are 50 ex+current stars in the league, but I am counting in only the present ones.
I know that playoffs start in the first round, I just thought it would be great way for us to determine the outcome of the OPs question.
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