Ret can be gear dependent, though for dailies you should be alright with just a 450 item level - which you can get just from AH pvp gear for the most part - any upgrades to that level have HUGE dividends on time.
The other thing to remember is that the most popular daily quests - normally domination point - can be subject to respawn bugs that at lower gear levels will get your ass killed. So don't be afraid to play a little more slower in some cases to emphasize survivability over speed.
Which is really the thing that Ret offers well, a good mix of survivability and damage - though the damage can have a large rampup cost considering how TV hits for a good 3x harder than crusader strike and twice as hard at least as exorcism or judgement. (At least at my 481 gear level.)
So take that as you will.