I see what you mean. Of course Thunder is better, but... I don't suppose it hurts to point that out, eheh.
So, another analysis question here... on Iwaparesu. You repeatedly mention Sturdy as the ability of choice, which confuses me a little... Aren't OHKO moves still banned in 5th Gen? :0 or does Sturdy have some new effect in B/W that I'm not sufficiently familiar with?
Also, DD Ononokusu with Dragon Tail (likely the only frequent user of the move as far as I can see) would make an excellent teammate for hazard-support Iwaparesu, in case you want to mention him.