Let's do it this way
All Star game starters
2003
pg Iverson
sg Kobe
sf Dirk?
pf Duncan
C Shaq
2012
pg D Rose
sg Durant
sf Lebron
pf K Love
c Howard
Yeah. I am sorry. There is no way 2012 loses that game. Shaq is their best shot. K Love would ruin T Duncan. Yes. I get that Duncan was better. It's just that he would outrebound Duncan and shoot a 3 over him while singing "Anything you can do I can do better"
D Rose would shoot it in Iverson's eye while rapping "What's the difference between me and you" by Dre and then remark that thanks to Dre at least something good came out of his era.
D Howard would block Shaq repeatedly and say "Well I can jump because I'm not fat. Oh and watch this. Lebron is about to outrebound Dirk even though he's shorter. Then he's going to start a fast break. Last one down is fat! Beep beep!"
The 2003 team would have to rely on Kobe's shooting and call in Ray to try to bail them out.
2000 would probably out
Kidd
Bryant
McGrady
Duncan
Shaq
2012
Rose
Durant
James
Love
Howard
What would really happen.
Shaq and Duncan would kill everything 2012 guys have going to the basket. Rose and LeBron aren't barreling in for dunks and and1s, Howard can't get anything against Shaq, Love isn't able to push guys around for boards. Durant struggles putting the ball on the floor against Kobe. McGrady gives LeBron jumpers and funnels him towards Shaq and Duncan on drives. kidd gets into transition and LeBron can't figure out who to cover on the break so no come from behind blocks. If the transition game fails give it to Shaq who moves Dwight like a feather for easy dunks/and1s or Duncan who banks uncontested hooks over the top of Love. LeBron and Durant can't cover either Kobe or McGrady because both are too polished.
2012 is playing hack a shaq and outrebounding the worse shooting team. 2003 has to bring in Ray, who never had the wheels to play in a game like this.
The 1980s team and Jordan's Bulls show up, start laughing hysterically, and Jordan says "When I said the game was in good hands I was being nice. It had to be in someone's hands and you were there. I didn't mean the hands were anywhere near as good.
Larry says "Let's have a shooting contest. I'm coming in first and Ray Allen is coming in second. Who's third?"
John Stockon looks at D Rose and Iverson and says "Who the hell are you? The new actors for Miami Ink."
They tell the 2003 and 2012 team to get off the court and go home. Lebron says "Can we watch? Pllleeeeaaaaaseeee"
Larry, Magic, and MJ simultaneously say "No!"
After a hard fought last shot game winner by the 80s team the door opens slowly
Bill Russell, Kareem, and Wilt enter.
Room goes silent. All present bow down.