Unless you are completely geared out...you should always do your 10 games a week. Lets say you need the Deadly gloves. Well you can buy them with full honor points(i think they are 38,000), or buy them for like 7,200 honor and 400 arena points WITH NO RATING.

Gear is ALOT easier to get if you have some arena points to put down. Now, If you are trying for the Furious slots(head, chest, hands, legs)....then you will need rating