Following the rumors that Monster Hunter 4′s delay was to accommodate for a Vita release, the topic was brought up over at Capcom Unity. A brief discussion ensued, after which Capcom Senior Vice President Christian Svensson himself entered the conversation, and his response essentially squashed any chance that the game will leave the 3DS.
I previously expressed my opinion that, given the strong sales of Monster Hunter 3: Ultimate and the 3DS versus the poor sales of the Vita, it was unlikely that these rumors were true. While Capcom hasn’t outright said that a Vita port is an impossibility, Christian Svensson came pretty close to it.
I would not believe everything you read on the internet. It will set you up for disappointment or misdirected frustration.
Following Svensson’s response, the thread was closed from further commenting. Looks like Monster Hunter 4 is staying a 3DS exclusive.