Originally Posted by
emperoreternalxix
Ironically i actually don't find the plague marines broken at all. They are ridiculously good, of course, but i find that an all-plague marine list is easy to beat. Power fists and other high strength/low ap weaponry claim their lives 40-100 pts at a time and it's easy to whittle them to nothingness (especially since i generally find many plague marine players in my area are dense in the head or obsessed with being more nurgly, and so tend not to make sound list-building decisions).
They are very good and maxing them out in a list is annoying, but their damage output will be negligible almost. Fire a few plasma cannons into them and watch them fold.