It's not necessarily cowardice to run from an opponent who is obviously much stronger than oneself. Even the most valiant of heroes ran when they knew they were up against enemies who could kill them easily (unless something worthwhile was at stake that they were willing to sacrifice for). It's usually just common sense and smart thinking. Cowardice is fleeing from opponents whom you can actually defeat or at least have a 50/50 chance against.
I nominate GWM. He seems decent despite some severe handicaps.