Hm, I'm unable to read the OP, but I think we can be pretty sure that Nintendo made a deal with Capcom to bring Monster Hunter Tri to Wii. At the time Capcom claimed they made the switch due to "development costs", but every other major Capcom franchise remained on PS3/360 (RE, DMC, SF), and they even claimed that some of these (RE5) could NOT come to Wii because of its weaker hardware, a claim equally as silly as their comments about MH3's expenditures.   It was PR talk, nothing more, and Nintendo's marketing deals for MHTri made obvious the real reason the franchise switched platforms when no others did. Nintendo even had to make a controller as similar to the DS3 and other traditional gamepads as possible in order to make MH playable on Wii and get Capcom to agree to the deal.

MH3G and MH4 on 3DS seem to merely be an extension of that deal.  They were already working with Nintendo on Monster Hunter, and nobody really knew how the 3DS or PSV would fare, so they probably decided to continue working closely with Nintendo for the time being.  Working that closely with a first party at the very least hedges your bets should you happen to choose the wrong horse.

SONY can't control CAPCOM's decisions. Also, the PS Vita isn't a failure, it hasn't even had its first holiday period yet, save the obsessive hating for next year.

Install bass is an issue, you are assuming that MH would boost the VIta by like 3 million alone, you are clearly in denial if you believe thatReleasing on a platform with a large userbase gives MH more room to expand not expand a platform all on its own. Think from Capcom's shoes not your own, you want MH because Vita is a failure without it but Capcom wants MH on 3DS because a larger install base allows for the franchise to grow. Please don't say then why not multiplatform when you know Capcom develops for one first and then ports later.

It is. Less potential sales > less profit earned.

Lol... someone's aggressive. Relax, we're just talking about video games here... Anyway, yeah I think it'd boost the Vita's sales substantially, as it did for PSP. So it's install base would grow, and MH would sell. It's in capcoms best interest to go multi-platform, because there's money to be made on both platforms, not just on the 3DS.

Im not being aggressive, im just stating facts but i know how people can be and only want certain franchises to sell their favorite.

What the hell... I don't have some agenda and only want Vita to sell it... why do you make that assumption?

Money made on both is an assumption by you. Yes, yes it is. The Vita version could flop thanks to its poor userbase and how often does Capcom do multiplatformal releases on the same day for MH?

The PSP didn't have a big userbase when MH came out for it. MH was hugely successful on that platform. I think a lot of people would buy the VITA version over the 3DS version due to the better graphics and possibly better performance, and also due to the fact that a lot more people played MH on the previous Playstation handheld rather than the previous Nintendo handheld.

They havent done it in the recent past so why start now?

Why not?

 I already know why its because it would boost the sells for a platform that really needs it.

Ok, sure, I agree it would do that, thanks for helping my case.