I was pretty sceptical about 400+ DPS BRDs initially but after checking around with one of our FC's main team's BRD (Tonberry server 2nd T9 kill team), with ilvl110 BiS (High Allagan Bow) the max he can pull is 445, albiet that's a total 35% critical hit rate which is slightly higher than the average at around 24-25%

I'm running on Artemis Bow Novus (HA bow hasn't dropped for me) with two non BiS pieces (waiting for T8 pants and choker, never seen one for 10 weeks?) and 400 DPS is possible without DRG's debuff so far.

Just a point for all BRDs to note, when you compare numbers, compare it with similar amount of swings (aka number of hits) and with a similar critical hit rate. For example, compare parses over the same amount of minutes and seconds so that the number of attacks are within 3 hits of each other or so, and of course, comparable crit hit rate. No point comparing a parse where A's total average crit is 24% and the other chap is 35%.