Firstly, I wasn't saying the 3 and 4 remakes sold well, I wasn't commenting on the platform they're on, I was saying, Square remake shit, a lot.
Second, I really don't know what you don't understand about this. If they made FFVII now, they'd have an engine already. When they made FFXIII they didn't. They made it for the game, it is part of the production costs of that game, it would not be for VII. If that doesn't makes sense to you, I'm not repeating it, I literally can't say it any simpler.
I just think you're totally wrong on the next section. FFVII is complete, they have a game, start to finish to remake, the difference in terms of pre-production would be huge. And again, no engine development costs. And they already have CG assets built from AC and the tech demo.
Yes, I do think it'd cost substantially less than an original game of the same scope would. For a lot of reasons I've posted above.
And yes, I do think it'd sell BETTER than XIII will. Because the trends of video game remakes don't really apply because so far, most of them have been basically unwanted. This is one everyone has been begging Square for, and buying any shit they stick Cloud on regardless of how crap it is.
I've been awake all night, and it's 11:30am here, so I'm going to bed, any reply will have to be hours away.