Why does Nintendo take that long to make games compared to HD consoles?

[Ail]

The Ghost of RubangB said:
Nintendo, Blizzard, and Valve are my 3 favorite developers, and they're the 3 slow meticulous Stanley Kubricks of the gaming world. They take their time, and they get the job done right the first time.

And Nintendo spends 90% of their development on wacky dreams that never see the light of day, so that slows them down a bit too.

Are you talking of the Valve that developed L4D2 in 1 year or so ?