Yeah, this is huge imo and waaay to vague and whenever I explain to someone how to score a fight, I ask them to judge who is landing the cleanest blows, who is more difficult to land on and who is generally controlling the fight, the guy fighting the fight he wants to fight.

That's pretty much the standard issue explanation right there, the last little sentence. The guy fighting the way he wants to fight is the ring general. Even if a fighter is on his backfoot and staying outside, he can still be the ring general if the guy walking him down is clueless and having no success. The guy who is fighting the smarter fight and more importantly, taking his opponent out of his game. Usually this factor comes into play more when you have a great clash of styles and two boxers are trying to fight each other with complete opposite tactics as was the case when Spinks fought Mayorga, Taylor and Karmazin, the ring generalship means more in that case. When Corrales and Castillo met, ring generalship was really irrelevant because both of them were exactly where they both wanted to be and doing what they both wanted to do.

In addition to a scoring category, like defense or accurate punching, you can apply ring generalship as an attribute to a fighter. For example, Bernard Hopkins ring generalship has been second to nobody's for the better part of the last decade. His opponents simply never fought the way they normally did and were almost always off rythym. It's that attribute that has helped take Bernard so long into his 40's still fighting top level fighters. This is an attribute that is most overlooked and most of the time comes out when they are in the ring, who the smarter fighter is is difficult to judge before a fight sometimes.