A true overall "DPS" is one that survives.

Will know when to hold back, gauge a PT setup before engaging.

Will understand limits of the 2 different Tank and Healers.

Will understand his own limits, and not laugh or brag about his/her own DPS vs other DPS.

Lastly, don't even care about "DPS". You equip yourself and know the above 3 points. Everything will fall in place.

Remember it is not you as a DPS. It is the entire Team.