This is interesting, but do you have a link or any proof of the truth of this? I think that'd be cool if K2 was taller, but I do feel sorry for the climbers that have died trying Everest, or just those that have done it because they wanted to climb the highest mountain. I have heard that K2 is a harder climb than Everest though.
I'm sorry but the list provided in the link is wrong. Popocatépetl and Ixtazíhuatl mountains just outside of Mexico City are both 17,500+ feet over sea level. That would make them 41 and 42, or around that
About K2, it would be great to confirm that the mountain famous for being the most dangerous is also the highest.