From the little I've looked at Apocalypse, it looks decent enough. The problem is that with the "anything goes" sort of rules, you gotta play with people you know won't cheese out their lists. Cause do you really want to fight against 250 asscannons?
Nothing will be as survivable on its own, but I think Tyranids will really come into their own in Apoc, because you can put out too many different targets for the enemy to have any chance of destroying. If you put out 15 MCs, 250 little things, and then a bunch of Raveners, Zoanthropes, etc... No one thing will survive better, but Tyranids are all about the collective effort, so it should work out nicely.
And what you have to remember is that when you're playing in a team game, sure they will have enough to do huge damage in a turn, but then your opponent is ignored. And, if you get first turn, everything gets first turn charge ^_^ 12" no-mans land looks awesome.
*shrugs* I got my first Apoc game possibly on Saturday or Sunday, so I may be able to give you a better opinion on it then.
