Which is fair. I was responding to the comparison. Having the puck (or not, as the case may be) by virtue of your usage does not equal "shot suppression," "possession monster," and other laughable phrases that get thrown around here.
On the flip side, even the best teams don't have the puck for close to 50 % of the game. But yea, defensive skills are crap. I don't know why anyone would want a player who has them.
That said, I don't even think Yandle is bad, or bad for this team. I like the offense he adds on the back end. I just recognize that he can be a nightmare defensively. And think it is ridiculous to say there is no universe in which Staal could be considered better (or, as was implied, even of comparable value).