Most people aren't saying the XBO doesn't deserve FFVII. You might want to read my post above yours.

To add onto what I already said, while you care about an XBO version of FFVII, the vast majority of the XBO userbase does not. On top of the 300 to 10 ratio in FFXV preorders in PS4's favor, PS4 KH3 preorders are ahead of XBO KH3 by 100 to 2 from what Abdiel saw in April. Abdiel also noted that Xbox customers never ask about Japanese games whereas a good chunk of the PS4 userbase does and this is in the US, the XBO's strongest market.

The fact of the matter is the PS4 is going to win this generation anyway, with or without FF7 Remake. And most copies of FF7 will be sold on PS4.

So to "Sony-fanboys" really what's the harm in letting some XBox or even Nintendo fans enjoy it? Not everyone can afford two $400 consoles and/or not everyone has a gaming PC to supplement the $400 they've already spent on a home console. I have all three consoles, so I really don't care, but I understand this is not the case for everyone. 

Make it multiplat for the sake of gamers. It's not going to change anything sales-wise this generation anyway. We already know how this generation is going to turn out.

FF7 isn't just for RPG fanatics either, FF7 had high cross over appeal in the US to "normal" gamers too, so it could do better on the XBox than a regular RPG would. 

If we use common sense, we understand there are not a lot of chance it comes to X1, while the port doesnt even come to X1 ( whereas it would cost nothing and would be a first test to see the potential interest ) , FF VII R could stay PS4/PC only like the original , just like DQ XI will likely be in the west, just like every other japanese squre enix game announced this year, why FF VII R would be any different unless microsoft or xbox gamers show a strong interest for the game?

I think it will all depends on FF XV sales on Xbox One, Square Enix keeps that in mind , waiting.

And about a NX version, different hardware means additionnal cost, it's something square enix avoids when the install base isnt really  big ( the same reason why 3DS games like Bravely Default and DQ remakes are not on Vita while it could easily sell 500k )

They said "first on playstation" so I assume it will be on xbox. Or else they would've said console / pc exclusive, play first on playstation. Considering KH3 and FF15 is on xbox one would make sense. Eventhough none of these games appeal to me (I hate jrpgs).

No reason to assume Xbox One either. I'm sure it's coming to PC. It looks like they have the option for an Xbox One version is open, the question is will it be a good investment for the company?

A delayed RPG on the Xbox One doesn't sound like a seller.

World Of Final Fantasy also said as first on playstation, and it's really not the kind of game that would go on X1

First on playstation also means first before PC, they used the same wording for No Mans Sky and Hellblade ( and changed it after it was announced on PC the same day )

And most of all, the gap in install base wasnt that large when FF Type 0 released, only 9M more than X1, still 1:7 in PS4 favor, so what will be the ratio when there will be 30M more of PS4 ?

No Man sky and Hellblade? When did they use the same wording? Also, there is already talks about no man skys being on xbox (phil spencer even wants it).

No Man Sky was June 9th 2014. There is still a chance it comes to the Xbox One, just not a high one.

http://www.ign.com/articles/2014/06/10/e3-2014-no-mans-sky-making-console-debut-on-ps4

Pretty much the same wording  and even more specific, well here it's clearly said it could come on X1 after with " console debut ".