Because of the gameplay and teamplay Nameless. I know other maps can be just as good or even better, if you playing with the right people that are team playing. But in LC all players are forced to worked together like a team. This is the best part of it, yes it looks awful, but so does so many other good maps.
I used to have the zip file with the map, but it doesn't seam like I have it anymore. I will keep an eye for it and tell you if I see it, Derdak2rot.
I'm a very "happy" owner of a 700 MHz AMD with 192 MB RAM and a Gerforce2 card.
PS. I send a mail to you Derdak2rot if you didn't notice.