I would quit your guild. Those people are too stupid to play with and are the types of people that ruin games. I would like to see some more utility from our class on the debuff side. BUt the fact that you know you are number 2 and your guild is submitting parses is a bad situation all together. My guild is working on HM EC and we never use parses outside of our own sick pleasure. Guilds like yours make the game not fun.
This I would never get rid of my #2 dps for any of the reasons you stated. Find another guild. You will be better off with a group who appreciates you for what you bring to the table.