No. Bernie, for all his faults, is a much more experienced politician than Warren and has more revolutionary talent. His social democratic message was only possible through talk of a "Not Me, Us" movement that used himself as a catalyst for real social change. Warren would not have done that. She doesn't have the speaking power or motivation to take that avenue - a very dangerous line of attack that came abnormally close to dislodging the most set-in-stone political nominee since Al Gore.
Warren has more baggage and isn't very experienced. She also is more disliked by the GOP than Bernie and she isn't quite as left wing. I think she should have endorsed Bernie, which would have helped a lot.