Vikki, I don't think the time taken for composing the songs can be taken as a criteria for judging the MDs? It varies from person to person. Einstein wasn't as good as Newton while verifying the theories. He used to think a lot and revise his own set of conclusions time and again before presenting them / using them for further research. I read somewhere that "Describing Music is like Describing Sex. Would you be able to describe it?" If we see with that line, One who takes more time is better.