That other place has too many darned cliffs... and in annoying places that make navigation a pain. If Wrothgar had been designed like Elsweyr with cliffs that weren't annoying to navigate, it might be more of a toss-up.
This was really tough. To be honest, the main reason I went with Northern Elsweyr is because it's way behind in the vote and I think it's at least as good as Wrothgar, possibly better.
ALL HAIL SNUGGLORR THE MAGNIFICENT, KING OF THE RNG AND NIRN'S ONE TRUE GOD! Also, become a Scrub-scriber! SJ Scrubs: Playing games badly to make you feel better about yourself.