First of all, Simian Thrash would be EVERYBODY'S main WS if it was not reliant on evasion, so it's understood and was a good move imo. Secondly, having a monster miss you is different than you evading and attack, and therefore, jarring strike and haymaker only proc when you evade, that's just how it works. I enjoy the way PUG plays, as it can have a few different play styles, dependent on what traits and actions you use.