I am considering the EP350 sub, but curiously just noticed that this is a 200w sub. The EP500, 150, 125, etc.. All are the same wattage as their name implies (ie. 500W, 150W, etc..). Why is the EP350 not really the EP200?

Anyway, I'm also now considering the EP175, as its only 25W less, AND, interestingly, the HT Wizard tools here on Axiom's site, always seems to return this sub as a pick (if not the EP500 which is too big for my needs). The HT Wizard never (at least I can't get it to happen) seems to pick the EP350 -- any thoughts as to why?