No prediction based on hypothetical scenarios this complex is ever really fact, but he has the most evidence behind his argument unless you assume that Sony would not have put up the ad campaign that MS did which is a reasonable probability but not what you presented.  

Yes, he was wrong in the idea that it definitely would have sold better had it been on PS3 but you were wrong in your justification "considering alot of the the new rpgs ips relased exclusively on 360 sold better than the new ones on ps3 imma have to say that its in no way absolute that it would have sold better on ps3." because you arne't comparing apples to apples with your "a lot of the new RPGs IPs released sold better"  The only apples to apples comparisons for rpg fanbase sales have been in favor of the PS3, so assuming that it got the same ad campaign I think the most likely answer is it would have sold better.  

Well, the characters lacked emotion... at least their face could use some more. But the story wasn't that bad as most tell. Sure the plot was generic at best, but the game gave me a great sence of adventuring. The characters were constantly kept at edge by the main antagonist (even when he was not present, since the world was crumbling to his power), overall, i believe they had a good back and forth with Nene. It made the build up to the last level much more satisfactory than it would be without it. And there was a nice foreshadowing in the game. It would work better as an optional last quest, but it was still nice.

Sure as hell beats the crap out of whatever plot and characters Star Ocean 4 or Magnacarta 2 had.

Star Ocean 4 was much worse for sure. The plot in that one fell apart after the first twist.

I did think the villian was awful though. He had no motivations for his actions and did it all largely for the sake of doing so.

Have you beaten Nier? The endings were so unsatisfactory. The game didn't stumble and fall short, it fell into oncoming traffic and got hit by a rocket powered truck.

N3 is the definition of a bad video game. You just stand for hours tapping A to do the same combo over and over, and enemies keep respawning. It's no fun, it's repetetive and tedious and the story isn't that good either.

I striked Last Remnant, not because the game was particularly crappy (it's okay), but it's so god damn laggy, I find it unplayable.

I have to play Tales 2 to judge it, I generally hear mixed things

That's sad. If you don't have a PS3, then you most definitely should get one. I don't see how somehow with your tastes could not have one! I know they brought it over for PS3 there.

If it's that simple......

My game is on a shelf at my parents, I'll test this out next week. If this works, I'll be so happy, bu then I gotta go through the DLC. I never beat that last super hard boss.

Yup, I definitively should. Money is the problem xD I'm really happy with my 360, but I wouldn't mind a PS3 for its JRPGs. When PS4 and Nextbox are released, I'll look into it, hopefully the price will be almost a giveaway!

^Does he look like a guy who needs motivations? I mean, besides striving for world domination. 

This guy was 90% evil, 10% purple

Why? What did I cross out which you disagree with?

Nope. Haven't played Nier, but I want to. Don't tell me that, though D: Was it real that you had all your save data erased?

N3...damn it! I have heard bad things about it, but to that point, it looks ridiculous. I don't agree with The Last Remnant, though. Perhaps it is because I installed it in the Hard Drive, but I can play it with (almost) no problems.

Tales 2 is horrible, but not because it is laggy or unplayable, but because they dumbed it down really hard. The Tales' charisma is absent there.

Try it! Who knows. You maybe got luck this time. There was a trick which involved Sed for the Last boss in the DLC that allowed you to win within three turns. Check it out in youtube.