Board Thread:Warhammer 40k General Discussion/@comment-6589306-20130228113457/@comment-2253300-20130301173027

Yes but you are forgetting the numerous potent biomorphs that Tyranids possess. Tyranids can have acidic blood just like the Xenomorphs. Rending Claws such as used by your garden variety Genestealer can rip through Power Armor. Also lets not forget the countless ranged biomorphs. The best that Xenomorphs have in this area is spitting acid, and I doubt that they can do it at great range.