CS with dagger is too OP but guardians are based on inflated melee, their regular damage isn't THAT great. Also compared to other classes they don't even crit that high, yes invoke has a high % boost but it's not based on your main stat (str) but on dex. Other classes such as dekans will crit higher even tho their % is lower because their main stat is used. By changing the blockrate buff guardians will go back to dual wielding instead of single wielding a dagger, making their base attackspeed 900 instead of 600, thus preventing them from stacking insane attackspeed and with that insane damage (Order Swing).
That should solve some problems already because their powerspike needs more ''charging'', even without a nerf on Crazy Swing but hey who gives a sh1t right.