There are no guarantees when it comes to med school admissions.
What kind of "decent ECs"?-- Research? Medical research? Volunteering? Medical Volunteering? Shadowing? EMS? President of the Friday Nite Drink-til-you-Puke Club? The specifics are important.
Your MCAT has good science, but mediocre writing/verbal skills. The 2 kind of off-set each other as far as "guaranteeing" your admission.
Your 4.0-- is that in Biology? Speech Communications? Molecular Biophysics?Swimming Pool Management? Did you take just the bare minimum of courses to cover your pre-reqs or did you expand out, challenge yourself and succeed greatly with a 4.0? Once again, the specifics are important.
From the little bit of info, my speculation would be: providing you aced the interview, you would be a solid applicant for GW. Depending on the specifics of your app. package (mentioned above), you seem to be a solid candidate for many schools.
Take a step back, look at your details, and give yourself a good, hard, objective look-- you'll get your answer.
Good luck,
PBM