Good GRE score is important for international students who do not have much research background.
Your profile is extremely strong. Research papers published in Journal is surely a big plus and on top of that recos from big shots.
That being said, MIT,Stanford and UCB are always game of chance but with your profile, I strongly think you should go ahead and take a chance.
For a closer inspection, you may wanna explore the admission prediction tool at this site-- www.missiongre.com --- Admission Prediction Tool