I'm not sure if it is confirmation bias but I also felt my mez was getting resisted alot more than it should on my skald. Granted most of the skald spells are relatively low level, especially with 46 BS, I did get mastery of focus II but still felt the resist rate was noticeably high. Even "rage spec'ed" into mastery of focus III to get the spells up to lvl 50, because the resists were so frustrating.