I have had a bitter experience with .com as well. It looks like .com is only focusing on creating their own themes and promoting them. They only accept what they think is good (probably only the first person looking at the theme decides). They release a very similar theme but with bad UI on their own but reject what is better. Every theme I submitted got rejected whereas I have had experience of selling a lot of the theme on .org and many people like it and made hundreds of thousands in revenue. It was frustrating and my theme shop have decided not to submit to .com anymore. Lot of time wasted to get their sorry ass rejection.