If FFXV can run on an XBox One, it could run on a high end mobile chip (like the Apple A9X) at 960x540 resolution in my opinion.

A9X is roughly equivalent to a Nvidia GT730M processor, and that processor for laptops can run PS4/XB1 only games like Assassin's Creed Unity and even things like Witcher 3 OK. They may have to scale down the effects a bit though. 

Nintendo with a console that is as powerful as current gen with much support would be ideal imo.

If I remember correctly, Nintendo had some exclusive Metal Gear Solid titles back in the GCN days, I'm pretty sure that is why we got Snake in Brawl.  I think the disappearance of Snake in Smash 4 demonstrates that Nintendo didn't want to keep a character in Smash who doesn't have any real presence on Nintendo consoles anymore.

Cloud has very little presence on any Nintendo console (except for maybe an obscure cameo appearance in games like Final Fantasy Explorers).  Maybe Nintendo is just setting a new precedent by having Cloud in Smash, but I believe that there may also be something big coming that will justify why Cloud is there.  Losing FFVII was such an embarrassing mistep for Nintendo back in the 90's that I just can't see Cloud come to Smash unless there was something in the works that we don't know about yet.

Does it really demonstrate that, though? Who says it's not the other way around? I think it's just as likely that Konami made that decision.

Personally I think going back the hardware philosophy of the N64/GCN/SNES of having better hardware may not be a bad idea given the modern market, where free games and $100 tablets (soon they'll be $60) have really hurt Nintendo badly in the low-end/kids market.

To differentiate they need to move more upmarket because you need to increase the difference between low-end cheap gaming (tablet/phone games) and what you're offering if you want to sell $30-$60 games in this day and age. 

Even if the NX console "only" sells N64 numbers (33-35 million lets say) ... that's a huge improvement from the Wii U and imagine how much more games like Mario Kart 8 and Splatoon could've sold with 3x the userbase.

A powerful console + a cutting edge portable that can share games, even of PS4 quality on the portable (scaled down a bit and cheating down in resolution of course) wouldn't be the worst combination in the world, they would score a lot of developer support.

Powerful doesn't necessarily mean expensive either, not if you are smart in the components you choose and stay away from expensive hardware gimmicks or get tied down in weird proprietary designs.

You asked what made me assume that Square Enix was talking about the PS4 version of DQXI in regards to the NX? Well, what other version is it going to be ported from?  The 3DS version?  I don't think that little of what the NX will actually be.

I don't understand how an Xbox one port makes it a stronger case that there won't be an NX port.  That just means to me that Square Enix is more than willing to port to other platforms if there's an audience, it can run the game and there's relative ease in the porting process.  Even if they're starting to drop xbox one support, that actually gives me a stronger argument that they'll likely port to the NX as long as it can handle it and porting to it isn't a headache since they'll need another platform to make up for the lost income from the xbox one -- plus, Nintendo platforms still have strong JRPG audiences and Japanese support -- and if Nintendo can find a way to make console games run at a smaller resolution on handhelds (which is what's kind of being hinted at with the unified library rumors) then Square Enix and every Japanese 3rd party are going to support the hell out of it.

In the end, it doesn't really matter if any of us are right or wrong but it's fun to speculate on stuff like this.

I honstely don't think FFXV is going to suck. I'm pretty happy with what I've seen so far.

Double. Sorry.

At the very least, I think it'll be better than the FFXIII trilogy.  But after looking at footage, it's just jarring when I compare it to FFIV, V, VI and even VII.  It feels like their primary target audience now are teenage girls when I look at the boy band cast.

You can call it however you like. If it's released in parts it will be bs, as it's already a single game.

Still, your examples aren't multipart games. yet again you're listing individual games that are sequels.