How can you compare this to a paladin bubble? You must be desperate or terrible, probably both. Let's see. A paladin can heal himself to full during bubble, marauders don't have any selfheals except 100-200 ticks from bleed crits. A paladin in bubble is IMMUNE to EVERYTHING. A marauder with undying rage, can still die or be cced. And this is where the l2p bit comes into play. We have to sacrifice 50% hp to use it, everyone knows we'll save it till we are near death. That means you save your stun till the marauder is 20 or 30% so you can finish him off before he's able to cast it.