Well I don't really think anyone is 100% sure on what is the "correct" way to gear yourself as Destro which is why you'll see everyone doing it differently. As to what I do is I gem and try to "stack" mastery as the way I see it and crit both point-for-point buff Chaos Bolt damage but mastery also buffs Immolate, Incinerate, Conflagrate, and Fel Flame (though FF is not that important) by a decent amount and Shadowburn by the same amount as Chaos Bolt. Haste is actually pretty good as well as it buffs not only our pets and our own casting times (not really any point to hitting haste thresholds as destro) but it also increases proc chances on our RPPM trinkets which make Chaos Bolts do more damage as the fight goes on. And of course crit increases Chaos Bolt damage point-for-point and increases the chance for more ember generation.
So as a rule of thumb, I gem and enchant for mastery, get haste to about 6636 (as I run an Aff OS for some fights this tier) but this will go up as I get better pieces, and I try to make sure that every piece of gear that I get has passive crit on it. Even though I'm going to end up forging out of the crit for other stats, all of the passive crit that I am gaining is still and increase on Chaos Bolt damage, potential ember generation, and more chances at procs of Cha-Ye's (as an example I went from around 2000 crit rating to 5382 crit rating). But again not 100% sure if this is the perfect way to go, all I know is that it has been working for me and I'v been doing rather well both on single target and multi-target fights all tier.
When it comes to your logs I see what I've seen in other Destro warlock logs in that Incinerate damage beats your Chaos Bolt damage on pretty much on almost every fight, which is something that I personally don't understand. Are you watching your trinket procs and making sure that you are dropping embers on Chaos Bolts whenever an int proc is up (or skull banner, tricks, ect.)?
Here's logs of my dps on every boss before Iron Quon for this week (as we were working on H Tortos so we'll do the rest on Monday):
Heroic Jin'rokh - Council:
http://www.worldoflogs.com/reports/rt-0vuu0wcyx1m8a9ne/
Megaera - Dark Animus:
http://www.worldoflogs.com/reports/rt-rr2pxhuwg4r8u3ol/
(I wouldn't look at Megaera though as I was cheesing it this week as people thought I was padding last week so I decided to show them the difference. Here's a link without all of the cheese:
http://www.worldoflogs.com/reports/d...=10075&e=10518 )
And Iron Quon - Twin Consorts from last week:
http://www.worldoflogs.com/reports/rt-pys01u1j64cq0yxn/
In all of these logs for me Incinerate was no where near Chaos Bolt (except on Horridon when I was on bats). Again I'm not sure why I see Incinerates doing more damage then Chaos Bolts for you but it's something that I've noticed for a lot of Destro warlocks. It could be because your mastery is so low that you don't get as many high damaging Chaos Bolts as I do, but again not 100% sure.
Also with your geming, since you're geming for crit I think it would be better for you to use crit/hit gems in your blue sockets over int/hit gems. I also don't think you're going to get much benefit from the Glyph of Dark Soul as you should really be using DS on CD.
Edit: I didn't look for this the first time I looked at your logs but it came to me after I had already finished the post. You should keep RoF up as much as possible. The amount of embers it generates is pretty huge and might make up for some of the disparities in your Chaos Bolt damage and my own.
Take Iron Quon for instance (as it's a pretty good single target fight where you'll be damaging the boss nearly the entire time) you had a total of 63 RoF ticks while I had a total of 552.