For those who haven't been made aware of the issue, there have been some reports of freeps producing significantly lower critical and devastating critical hit chance percentages on creeps since the update to prep for Mordor. I've done an analysis of the issue in a thread in the gameplay discussion section of the forums. There's also a second thread in the same section in which others have posted their evidence. It seems creeps have been the beneficiary of some unintended buff while SSG attempted to prep for future content.
Here are the links:
https://www.lotro.com/forums/showthr...recent-updates
https://www.lotro.com/forums/showthr...-Since-U20-1-2
I'd be very interested to see more physical evidence (not just anecdotal text, but actual combat analysis outputs) from both freeps and creeps alike. It seems as though at this point the issue is only affecting freep criticals, but it's worth looking into on creep side as well.