[phjohnst]

Yes, K2 is is much more technically demanding climb (See the Black Pyramid, and basically any of the other less popular routes) and more unpredictable (falling seracs above the Bottleneck killed several climbers in 2008). It's usually only attempted by very skilled mountaineers. You won't find the same sort of climbing tour groups like operate on Everest - which is part of the reason why Everest, though the tallest, doesn't seem to be the pinnacle of mountaineering.

[joshfraser]

I recently met one of the 9 Americans to ever summit K2 where for every four people who have reached the summit, one has died trying. He quit after his friend didn't make it home.