Arena is easy if you have the knowledge of every cooldown and skill from every class. Otherwise it will always be difficult or lucky...
Before 3.x it was easy to hi 1700 with the knowledge of everyclass in everysetup. Even 2x RetributionPaladin was easy with a mate.
I always prefered arenamates with blue gear and the knowledge of everyclass. Never play with a s3 player who never broke the 1550 or 1600 rating...
If you never made 1600 with a mate (not dualboxing) you can't really say that you play well in arena.

At the moment I don't play arena anymore. I will try it againg in S.5 with 2x elemental schaman and Warrior Paladin.

sorry for my English...