Oh, I'm sure he didn't actually kill Janet VanDyne. After all, Marvel's strategy for avoiding a real backlash seems to be that as long as they only subject their cast of characters to a fate worse than death, they'll be able to get away with plenty. But for now, that's what the finale to the time-wasting Secret Invasion seems to advertise, that Janet has perished, all for the sake of motivating other heroes to fight back.
Regardless of whether she's dead or alive, a Skrull or a human, the steps taken here have no point, are insulting, and are no better than when Bendis beat up on Scarlet Witch 4 years ago.
Predictably, this crossover was just a lead in to yet another - Dark Reign. I won't be wasting my time on that either, and now that I think of it, if Jan's been slighted even without being killed, no need to provide any readership to Mighty Avengers.
And Tony Stark is still depicted badly.