I wouldn't go that far. Let's see how this pans out. I must say, that anandtech poster's report that most 3rd party ports would probably run at 504p (a true 16:9 resolution at least) is not sounding too crazy now.
I mean, there are bottlenecks with RAM where lowering the res to even 240p wouldn't make things work, in that streaming level sizes, number of NPCs, AI, etc. - if you can't fit your data in memory it won't matter what resolution you run at.
Of course, third parties could put in the effort to very carefully manage their memory and retool their games for the system, but that would require there to be a certain install base for them to put in that investment to do so. And even then, some games just might not be port-able. Battlefield 1 would probably be such a game.
My point is that, given the rumors/leaks and historical precedent, I would buy this device with no expectation of third party AAA support. To do so would be heavily risking getting disappointed.