Hmmm thats a tough one. I feel like Dumbledore has a distinct advantage with magic. But cas is an angel however he doesn't know everything. Meanwhile spock and sheldon would science it out and rdj and house would just insult each other. While sherlock is wondering why the hell are they arguing and has probably figured out what each of them had for breakfast.
Well, for starters, get Capaldi out and put Tennant or Smith in.
They wouldn't all have different opinions. It would come down to The Doctor, Sherlock, House, Spock, and Sheldon vs. Cas and Stark and maybe that guy in the middle (not sure who that is supposed to be). Dumbledore would just be trying to unite both groups. The Doctor would occasionally be giving House a dirty look like "I agree with your conclusion, but you don't have to be such an ass about it." Sheldon would just be agreeing with everything The Doctor, Sherlock, and Spock said, without contributing any substance of his own.
At some point, Stark and The Doctor would get in a hilarious sarcasm battle.
Cas would be very distracted by Dumbledore's appearance, trying to figure out if it was normal.
If there were to be an argument, I would prefer Capaldi to Tennant or Smith. Nobody would take Tennant's doctor seriously, and Smith's one gets kinda overexcited/emotional at times.
Capaldi is all business
Yeah, but he's smart enough to back up his arguments no matter who he is, and Tennant's sass is just too good to leave out of an argument. And Smith is just... well, I just still haven't gotten over him leaving yet.
CAS, only because he wouldn't grasp any of the concepts they'd be speak of so they would have to explain everything they said and eventually they'd grow irritated and admit defeat
I just want to see Cas and Sherlock arguing. Sherlock will get all pissy and dramatic, and Cas will just stare at him and state the obvious. It'd be glorious
They wouldn't all have different opinions. It would come down to The Doctor, Sherlock, House, Spock, and Sheldon vs. Cas and Stark and maybe that guy in the middle (not sure who that is supposed to be). Dumbledore would just be trying to unite both groups. The Doctor would occasionally be giving House a dirty look like "I agree with your conclusion, but you don't have to be such an ass about it." Sheldon would just be agreeing with everything The Doctor, Sherlock, and Spock said, without contributing any substance of his own.
At some point, Stark and The Doctor would get in a hilarious sarcasm battle.
Cas would be very distracted by Dumbledore's appearance, trying to figure out if it was normal.
Capaldi is all business