So you're one of the many, many people who didn't get how the Versus Mode works.
I know all the basics quite well, and the idea aswell.
But the way it is now, those few random times I played it after it was fixed on normal (prior that it had atleast slightly variety), every game ended up that the infected team barely got even 10-15hp down and the survivors finished the map and when the teams were swapped it was almost the same. Reminds me more about very easy speedrun rather than a gamemode.
And in the case if the survivors were 'retarded', you might actually beat them before they reach the safehouse. Tank is possibly the only way you might prevent them from reaching, but that requires somewhat luck. And if the infected were 'retarded', they barely had any idea what's going on.
So my gripe then? If the survivors take only 1-2 damage per each zombie hit + you can forget a guy under hunter's pounce or smoker's tentacle for about 10 seconds before being incapaciated, you really can't do **** to the survivors, especially if they know how to run their assess off and still co-ordinate everything they do. It is practically just speedrun after speedrun without any real challenge, unless the infected gets lucky.