In that scenario give me tony Parker. My team is a matchup nightmare. Gasol at the high post forces Hibbert away from basket and Gasol can guard Hibbert at other end. I think Alridge is overrated so Love is advantage me. No way Durant can guard LeBron or Curry so he is left on an island. No way harden can guard Parker.
If Gasol can guard Hibbert, Hibbert can guard Gasol. And Hibbert isn't that easy to guard. He mostly uses a hook shot which the only way to alter is to actually make contact with him to throw him off balance. Jumping up to defend it won't actually do anything. And Bosh couldn't draw him away from the basket in the ECF, not enough to make a difference anyways.
Durant can't guard Lebron? Nobody can guard Durant either. He can shoot over anyone with a hand in his face and stop n pop which leaves him unguarded. The guy was the scoring champion 3 years in a row coming into this season.
I think Harden could guard Parker but if he couldn't, imagine Parker trying to guard Harden.
And I think you have Aldridge and Love confused. Aldridge carries bad teams to the playoffs as the go to guy while Kevin Love can't even get his team to .500. When Love is injured, the T'wolves winning percentage barely drops.
You say all of your guys are unguardable but I have 3 guys that combined to average 75.5 points on 47.8% from the field this season. And if you want to say Durant can't guard Lebron or Curry, then who exactly is going to guard George if Lebron is on Durant? Paul George is 6'9 and can shoot 3's. Steph Curry couldn't even alter his shot if he wanted to. I'd have to say though that Durant could guard Lebron as well as most in the NBA. So at the very least, Lebron wouldn't do anything more than he normally does.
I see no reason the team I have listed would have any less chance of winning than your roster. They're taller, a better rebounding team and I'd say a better defensive team. Curry and Love are liabilities on defense imo.