Because:

Indifference.

↑ this is your reason why there are no PS Vita doom threads, nobody thinks something like this about the Vita.

Well its usually the same people who make Wii U doom threads. I dunno why they do it. Maybe their preferred console isn't doing so well either but its doing better than the Wii U so they feel satisfied after making a doom thread. 

Because Wii U is still breathing and Vita is already buried.

I can't even remember the last time I saw a Wii U is doomed thread. I do however see atleast one let's circle jerk around Nintendo while also bashing Sony threads created by DarkRPGamer007 on a daily basis.  I'm getting tired of seeing these flamebait threads.

Everyone agrees Vita is doomed, so there's no need to make a thread about it.

Cause the Vita is soo dead that we have come to a point that people feel sorry for it cause really, it's not the Vita's fault its doing so poorly... Its the parent's fault so there is no point in bashing the dead handheld anymore...

The wiiU on the other hand, it is still trying to come back from the dead and the parent is trying their best to support it along the way so its a prime and easy target for haters! And when the wiiU gets news like MK8 isn't a flop, they really get ferious

Either that or people just hate on everything

Time to close this thread.

You'll be very surprised to see how Vita wil see more in long term than Wii U thanks to far much better legs and better support in Japan( whereas when nintendo will stop supporting Wii U, it wll just stop selling)