Yes, they should look like this but not play like this. JAL is right, you have some problems with VIS in this map. I ran around and got pretty bad fps in few spots. And its not my machine that makes it run so crap (AMD64 3500+, Radeon X800 Pro, 1gb ram).
In this shots theres nothing fancy going on but the fps was so bad, budgetpanel showed that world rendering is at max. You might want to use more detail brushes to clean up those splitting brushes. Also use some better vis blocking etc.
Anyway, the map looks good and with some optimization it could be better