Originally Posted by
Imnick
Titan Gas, Pheremones and Amber Shaper's Slime AOE Aura cause pulsing AOE damage over a significant time, even in the cases that do not cause spell pushback IB is still superior for absorbing this because it lasts for a minute or until it expires, rather than TS's incredibly short duration.
As they are both survival cooldowns, which one provides better DPS is not a particularly interesting debate because the answer is that to get the maximum DPS you wouldn't necessarily bother casting either.