I somewhat agree that double poison makes killing the CC troops exceptionally easy, but even a SINGLE poison did that.
I find that taking two poisons to a war attack is a waste, the 2nd one is overkill and would be better used as an EQ on the core (for mad damage) or a haste to speedy speedy some troops. Killing the remnants of a dragon after a single poison takes like 2 wiz and a barb, and the wiz aren't even sacrificed.
The only time I'd take 2 poisons to a war is if I'm using a lot of hogs, and I think I'll want a 2nd poison to strip skeletons from the hogs...





