Eh yeah. If most of your DPS dies, that means they're all afflicted by the weakness debuff for a bit. With echo, a lot of people would rather just reset, get the extra 5% or whatever that you get out of echo, and go again.
I know that's most of the problem I run into with PUG Ultima HM's is DPS not being able to survive certain phases. Titan doesn't have the hard DPS check that Ultima does, but the debuff still makes it take forever to kill him.
