Plug your character into www.femaledwarf.com and find out for yourself.
For me, going 20 Agility to 65 Mastery on gloves changed my DPS: +8.43
Changing 65 Crit to 22 Agility changed my DPS: -2.35
So, in practice, you won't notice a difference. If you're neurotic about simulators and swear by them as gospel, then it looks like the Cataclysm enchants are ever-so-slightly better, at least for my gearset.