Did you apply to any other schools? It's hard to say...
I think your quant score could raise a red flag for top schools (just being honest), but you never know. Good luck!
I'm not trying to be rude, but for those who didn't hear anything from GW yet, it most likely will be a waitlist or a reject. Only a few will be still pending!
Also, remember that not everybody posts his or her decision(s) here...