I don't know if most is the right word, but definitely many accept GMAT. However, ALL accept GRE, so why not take the GRE?If you observed "Tracker", almost all applicant have opted for GRE. Why is it so when most of the MFE accepts GMAT score as well.
I took GRE once when I was applying for my Master's. The verbal part was so insane. I'm not a native english speaker though.
So it's really difficult for people like me to score over 500
Anyway i got just 250 in verbal part at that time. That was sad.
But I've heard that GMAT is easier in the verbal part. not so sure about this.