I have a DK lvl 69
http://us.battle.net/wow/en/character/veknilash/Artnas/simple
Nice toon you got there
I haven't updated my rsham in years, but not much has changed (other than some gem and enchantment priorities):
http://us.battle.net/wow/en/character/silver-hand/Virise/advanced
nobody plays 69. What people play is 60,70, 80 etcetra... 64 was a hype during early cata to get extra gem slots when bracket was 60-64, after each bg we had the looser team logged a couple 64 druids with full resi gems and yeah.
Follow the meta.
69s really don't hold up much of an advantage, your stats will barely change in an arena and I would ferocious bite for 60% of your health, a 60 with good scaling gear on the other hand, can be much harder to kill.
It's your decision what level to play, of course, but it's a bit frustrating in this already struggling bracket to have a divide of 60s and 69s.
I don't play the char anyways tbh made it out of boredom
And as mentioned their not all that. While both is scaled up I actually solo 69 ferals on my shaman. As i can sit on ~24-28k hp scaled up and still crit 10k with stromstrike. While a 69 doesnt really get any stronger, the closer your items get to 138 the less its going to scale.