edit:

top rdps should be:
1) blm
2) sam (just very slightly under blm, since more physical buffs exist like embolden and brotherhood, sam can take advantage of more buffs
3) drg & nin (they offer no utility.. just dps buffs)
4) mch (just a utility)
5) mnk & smn (both offer buffs and utility; even if there are more physical buffs out there, smn has good utility)
6) rdm & brd (offer stronger utility and buffs)
7) dnc

this is just an order of top to bottom rdps.., gaps should not be to big

even if utility is often best during prog.., classes with utility should still not have higher rdps than those with none (by small but noticable margins)