Nintendo is bragging about their high quality games :P

[Mnementh]

BraLoD said:

I'm sorry to say this, but the user score was cherry picked to make things looks way better than they really are.
Nintendo userbase is way lower than both the PS4 and XBO, and Metacritic user scores tend to get higher when only a few fans of a game go there to vote, and Nintendo doesn't have that opposite that PS4 and XBO have that go in each other games to give them 0's (zeros) to make the score go down.

PS4 alone have more than 20 games over 85 in Metacritic.

I'm sorry to say this, but did you look at the numbers of users that voted. Smash has over 600, enough to attract some trolls. If you look at GTAV for PS4, that has a bit over 700, so not that much more. And GTA is one of the most well known games.

Virtues's Last reward for Vita for example has a better user-score, but didn't count here because of worse critic-score (probably because of the game optimised to stylus). Both, the Vita and the 3DS version have similar number of people voting.

And enough of the games on PS4 and XO are niche enough, even more on Vita, so that your explanation would apply. Only a few attract internet-rage.