I added the comma. Pardon my potential mistake but doesn't a list in English grammar require comma punctuation? This is the Oxford comma issue, no?
Yes it is. However, I believe the only way to interpret this is as a list of things NX may work with. Apparently NX can work with smartphones, PCs, and direct competitors like PS4.
Not that NX can work with smartphones and PCs
in order to rival consoles like PS4.
Either way, I'm pretty sure removing that comma does not imply that the NX can use PCs to rival PS4 power. Because by removing the comma the sentence is actually stating that PCs and PS4s are smartphones. Or that the writer is speaking directly to PCs and PS4s. Which is obviously incorrect and illogical, so that only leaves us to assume the writer simply forgot a comma. That or they foolishly subscribe to the idea that the oxford comma isn't needed.
Basically, it's a poorly written tweet. So poorly written that if they had actually meant to imply that the NX could reach ps4 levels by working with smartphones and PCs, then there are several, better ways to say that. Which again, means we should interpret it the simple way. NX can (somehow) work with smartphones, PCs, and even PS4s.
So yeah, I think there's not much to read into this other than the idea that Nintendo wants to bring everything they do together under one NX roof, and certain things within the context of what "NX" is will be compatible with various hardware.