On topic, sure, but they're still human. Their best of the best is better than Sony or Microsoft's, but their middle and lesser entries becomes more of a crapshoot.
Like do I want New Super Mario Bros 2 or Uncharted 3? Not either one, they're lesser entries in franchises that were once so much better. Would I like easyass Kirby or Halo Reach for my next disappointing game? I dunno. I'll give them the benefit of the doubt for creating fucking statues in the pantheon of gaming but man can Nintendo's first party have quality dips, ex. the 3DS.