Fix your MS usage and you'll see an improvement. Your MS usage is once every 7+ seconds on the first 3 logs. 8+ on Morchok. For an attack that only has a 4.5s CD and highest on the prio list, you need to use it much more often. Get used to MS GCD GCD MS.
You used Bladestorm and Sweeping Strikes....twice, on Morchok?? Why? There aren't any adds in the encounter nor do you have his twin side by side. Don't waste GCDs on abilities that serve no purpose on an encounter. Especially brostorm as you're stuck swinging in the breeze unless cancelling. That's 12s total of wasted GCDs.
It doesn't appear you stance dance. Because you said you went Arms a month or so ago, I suppose you're getting used to the spec. At the same time though, you want better dps, you should stance dance. Sooner than later tbh. Check out the Arms PVE sticky.
You have 4pT13 but didn't use Inner Rage once. Line your Blood Fury up with Deadly Calm.
Boss fight tips are something you should develop yourself because they revolve around how your guild functions. Specifically look at the time your guild takes on average to down a specific boss. On Morchok, you took just under 5 mins. So Reck can be used once. You should have saved that for the exec phase. Deadly Calm can be used twice. Burn one in the beginning and save another just before exec phase to build rage. Then burn Reck after.
Xenok made a good video on stance dancing and Arms rotation. Give it a look over:
Arms/Dance 101
Keep at it, those numbers will go up.