Originally Posted by
Belloc
The logic is that HA is an incredibly powerful tank (and DPS) cooldown. I would regularly wipe on waves 19/29 with DP, but with HA, I don't even need to use GoATK on those waves until around 29/39/49. Indeed, I find great usage out of HA on waves 2, 6, 9 and every repeat of those waves. DP is 100% random and the procs are, more often than not, completely wasted.
What's better; Random DP procs on waves where they aren't needed, or a guaranteed HA on the waves where they are needed? The answer is the guaranteed HA. Indeed, the very first attempt that I went back to HA was the attempt where I got my 30 wave achievement. Ever since I've switched, I've reached higher waves every single attempt. DP = random, HA = guaranteed cooldown, faster kills. I don't care that you might go a wave or two with HA off cooldown and unused as long as it is there when you need it.
Again, look at it this way: Waves 6 and 9 (and repeats) are the most (and, oftentimes, only) dangerous waves. What good is DP if it doesn't proc on those waves? No good at all, is what. Having HA up for those waves trivializes them. Seriously. I haven't felt threatened on any of those waves since I switched to HA.