Don't know if I would call it a Switch killer. Let's count how many technically superior handhelds have taken a dirtnap at the hands of Nintendo. It's not about technical superiority. It's about mass appeal and I don't see the Steam Deck managing to appeal to a wider audience than the Switch. Still, it's pretty cool and even though I don't care much about handhelds... competition is always good. But Valve doesn't have the best track record of hardware support.