Hmm, don't have a parser to test for exact rates, but before I swapped some of my gear I recently topped out at 512 crit (i'm still missing a lot of the pieces I need/want) and was averaging (again, eyeballing it so not 100% accurate) at least a 25~30% crit rate if not more.

Crit is incredibly useful I find on DRG because we have hard-hitting WS a pretty solid auto-attack. Nothing like regularly seeing 1k+ jumps and Full Thrusts, or 350+ damage auto attacks.