Just wondering if anyone else is experiencing problems with stamina and percentage bonus either very low or not working this week?

Latest is a Geeky with a couple of hundred K better strength and almost the same speed and critical damage as my Twins but with 2k less Stamina and no bonus compared to my 60% beating me by 49 to 59 seconds. Previously, that balance wouldn't have let my opponent get near me and similar results have been the normal all this week.

Just me or a game change/glitch?