Demonology logs - I got worse?

Hi all,

This week we decided to give Nighhold a final farewell and see how our specs were plaing during patch week (which as we all know is not indicative of what we will be able to do in ToS with T20).

I was looking over the logs knowing that I would be pulling less due to the minute nerf to my legendary. I am aware this nerf was required because with T20 it would be completely broken.

However, the logs are way worse than I had anticipated. I have no idea if this is the nerf, me or both.

Looking at Krosus for example I am looking over the logs and seeing a few things. This week I did the opening completely wrong with doomguard coming out late, and I wasnt able to get a 3rd one up for the final 20% (I think we killed him too fast?)

Also my Whispers in the dark did not proc once. Not once. Magical. Its only an 865 because Guldan has utterly refused to drop it for me but still...

Oh also I died right near the end... late enough not to affect the logs too much.

Please can others have a look and see what I did differently/wrong?

Note: I only pot once on HC clear cos no point wasting a second pot.

https://www.warcraftlogs.com/reports/VNAD8d9HpykYtXjq/#type=damage-done&fight=7

https://www.warcraftlogs.com/reports/PMXBZx7H6crTjhfV#type=damage-done&fight=23