he has a point.

...but if you are an "activision" and you spend what is probably a billion dollars to create a game like destiny you can't afford to be platform specific. indies can, big publishers can't.

I argued this point for the Wii as well. Take a good look at the Wii version of Prince of Persia: The Forgotten Sands to see how a developer can get it right.

he is right

Dead Space: Extraction is the first thing that came to my mind, a game that many Wii owners were angry about because it wasn't what the other consoles received.

Exclusives should be exclusive IPs, not exclusives based off universal franchises.  Otherwise, someone ends up feeling like they got the short end of the stick and they start complaining on the internet.  Petitons get signed!

That being said, I think that applies more to home consoles than to handhelds.  The 3DS and Vita hardware are just too far apart to try to match, plus the market is split into halves rather than thirds.

As far as the Vita Assassin's Creed, Ubisoft said it did quite well and that they were happy with it.

When I was a kid the Super Nintendo Castlevania was a totally different game from the Mega Drive/Genesis one, and the same happened with many other games, like Aladdin or Rocket Knight.
I think what the dev means is that that is better than what we have nowadays, consoles that have pretty much the same games. I think that is why Sony is investing in their studios so much, if it is possible to play Final Fantasy and Metal Gear on the Xbone, then they have to create their own exclussive appealing games.
Last time the Microsoft managed to take half of Playstation's market by selling a cheaper console with pretty much the same power. Now Sony is beating Microsoft by offering a cheaper console with more power.
It became a matter of who offers the cheaper option wins because both consoles have pretty much the same games.

Which few months ago was that. Because Nintendo has been bending over backwards to get indies on eShop for well over a year or more now. And even before that, their relationship wasn't BAD, just that putting games on WiiWare wasn't nearly as easy.

Correction. Big publishers can, if they don't spend a billion dollars making a "AAA blockbuster" budget game that, if it fails to sell SEVERAL million copies, is a flop that could sink a company. That is what is wrong with the industry these days, hands down.

And even then, it wouldn't be that hard at all to simply make a scaled down port of something like Destiny for Wii U. Or for that matter, considering the game is going to be on PS360, it wouldn't have to be "scaled down" at all.

spinoffs usually get less attention from devs so they don't become that good

put all games on all platforms and then if you have something that only works on one platform because of specifics make it for that platform only

not everyone can afford all consoles so they don't always have the ability to chose the best looking version and spinoffs usually get less sales anyway

Wait, what? You had me through most of this, but you lost me at the bolded part. Multiplatform titles between both 3DS and Vita aren't exactly plentiful, but they aren't unheard of, either. Usually, the only notable difference between the two versions of such a multiplat is the higher resolution on Vita vs the 3D on 3DS; there's no significant performance gap in such titles.

Of course, a major production taking full advantage of the Vita's power would have trouble running on the 3DS, but few companies seem willing to invest in such an effort on handhelds these days. Most Vita games would have few problems running on 3DS, and I doubt most 3DS devs would have too much trouble up-porting their games to Vita -- especially since both platforms are becoming particularly popular among indie developers, who rarely push consoles to their absolute limits. I think a bit more cross-development between the two handhelds could be beneficial to both.

Cleary Activision don't see the point in doing anything on WiiU regarding Destiny, as the audience isn't there. A game like Destiny won't fail either FYI.