Hello there!
I apologize for not getting to this sooner. Part of the delay is because I'm relatively unfamiliar with current cat theory and part is because I've never been the fastest at looking at logs. I see that you seem to rank on WoL pretty regularly, and your uptimes look quite good. Notable is your 13th rank on Iron Qon with a Rip uptime of 66%! This perplexed me at first but what I take away from that is that you've done a good job of finding out how to make dps happen outside the box of a typical rotation. That or perhaps you were cycling through bosses so fast that every third Rip or so involved a fresh target? I noticed that our most recent IQ kill was a nine-minute kill while your rank came on a kill that lasted only 6:49, so it stands to reason that you'd be swapping targets quite a bit more frequently. Or is it because more and more progression guilds are moving on to the heroic version of that fight? I'd say it's a combination of those, but glancing through what you've posted to WoL I think it's pretty safe to say that you play quite a solid DPS.
Moving onto a couple snapshots of your defensive cooldown usage: On April 4th (which appears to be the night your guild finished its H Ji-Kun progression) I see five uses of barkskin over ten total pulls. A little dismayed, I decided to go and look to see how many times Quills attempted to hit you.... and I found that the log shows Quills only about 100 instances of interacting with you throughout the night, as opposed to your logger Cason who shows over 300 such events. Since quills hits everything in the room, I'm going to go ahead and assume that you used roughly 2x the defensive cooldowns that the log shows, because you would have been out of range for it to record you for a decent portion of the fight. 10 uses of Barkskin over 10 attempts is still quite low, but I might have yelled at you for five! I also see only one Survival Instincts throughout the night, but as it is a 3-minute cooldown I find it a difficult thing for which to correct by using other bits of the log; even so I feel I should see more than that during heroic progression.
Using the same logic as in the previous paragraph, I went to your previous night where you had 16 attempts on Ji-Kun. For this night I see only four uses of Barkskin and no Survival Instincts at all. This is a very easy way to reduce the damage you're taking, particularly during encounters where you know when the damage is coming (Quills). This pattern is actually borne out by your Jin'rokh progression as well. 15 Barkskins and 4 Survival Instincts over 26 attempts is pretty low.
Quickly back to Jin'rokh, I see only 33 instances of Focused Lightning over 26 attempts (less than two ticks per pull as a melee seems pretty good), and your damage taken from Lightning Diffusion is among the bottom three of the raid (basically tied for 2nd-to-last). Good work not taking avoidable damage.
Overall: Your dps looks good. Defensive cooldown usage could use some work, and I didn't see any glaring raid awareness issues or massive amounts of avoidable damage.
Cheers!