Actually pot can make certain people faint with no help from other drugs. I gave my mate some pot yesterday and he text me saying "your pot is so dood it just made my mate pass out" hahaha! (apparantly NZ has some of the best pot in the world, heh and Martin Mendez was really impressed with it when I smoked a joint with him)
Also I know this guy Rick who often faints when gets too stoned, the most memorable occasion being when he fainted in the Tool Mosh pit (they hadnt even stated playing yet and he had just got in there so it wasnt heat or whatever)
So yea you guys are wrong although I can see why you would think otherwise if you never experienced it.
In saying this, pot is a million times better than any other illicit drug and also a lot better than alcohol. I mean 70 percent of weekend crime is caused by alcohol here in NZ and lets face it, if someone is casuing trouble at say a concert are they gona be drunk or stoned? drunk everytime I bet!