Shadow 1v1 1vX (duels, open world PvP)

Heyho, besides Evoker and DH i play every class/spec from time to time, all good rarely getting frustrated.

Well, Shadow is an exception, it feels absolutely depressing losing to players in a 1v1 or 1vX which i would never lose against with any other class. I love playing Holy/Disc Priest, even in solo shuffle but those moments with Shadow ruins whole class for me.

Is Shadow really just that awful alone? The reason i ask here that i hope some Shadows share they experience here and say it's just a l2p issue on my end so i don't have to give up on Priest. :D