[CaptainCrunch]

Spike: It's bollocks, Angel! It's your brand of bollocks from first to last.
Angel: No, you can't ever see the big picture. You can't see any picture!
Spike: I am talking about something primal. Right? Savagery. Brutal animal instinct.
Angel: And that wins out every time with you. You know, the human race has evolved, Spike!
Spike: Oh, into a bunch of namby-pamby, self-analyzing wankers who could never hope to...
Angel: We're bigger. We're smarter. Plus, there's a thing called teamwork, not to mention the superstitious terror of your pure aggressors!
Spike: You just want it to be the way you want it to be.
Angel: It's not about what I want!
Wesley Wyndam-Pryce: Sorry. Is this something we should all be discussing?
Angel: No.
Wesley Wyndam-Pryce: It just sounds a little serious.
Angel: It was mostly... theoretical. We...
Spike: We were just working out a - Look, if cavemen and astronauts got into a fight, who would win?
Wesley Wyndam-Pryce: Ah. You've been yelling at each other for 40 minutes about this.
[pause]
Wesley Wyndam-Pryce: Do the astronauts have weapons?
Spike, Angel: No.
Some more quotes from the episode regarding the fight:
Spike: Harmony just pulled me out of a very promising poker game down in Accounts Receivable, so this better be good. Oh, and, by the way, all the guys down there agree that astronauts don't stand a chance against cavemen, so don't even start.
Winifred 'Fred' Burkle: But that doesn't make any sense.
Lorne: I just call it like I see it.
Winifred 'Fred' Burkle: But the cavemen have fire. That's what they live with in their caves. The astronauts should at least have some sort of weapon.
Fred: Cavemen win. Of course the cavemen win.
Highlights
-Assume even teams(not stated, but implied)
-The cavemen are smaller than modern men and less intelligent
-The astronauts have no weapons
-The cavemen may be armed with fire
-The cavemen are likely stricken with fear from the strange astronauts
-The astronauts understand tactics