Left 4 Dead

[Mongoose]

I just played versus for the first time today. This was probably just the team we were playing against, but I actually found that it was a lot easier than playing the regular game on advanced. Me, the other human player, and the two bots we were stuck with at the end (because the other two peopple left about 3/4 of the way through) actually made it through the entire campaign with out dying once. And I think we might actually have all escaped at the end (I'm not positive about one of the bots).

Is that a normal experience for versus? I was under the impression that it was kind of unlikely for the survivors to escape at the end.