Honesty, nothing said here disproved any of my points.
First of all, block channel of the BG. Yes he could have it. With a shield. Now tell me how many Blackguards play SnB, maybe 1 of 10? 1 of 20? Majority is runing 2h gleve and goes for parry. Yes or no? So its not relevant practically.
The statistics shown also dont touch the class mechanic balancing. Why? Most of city instances are pug events. So you got the instances filled with a bunch of pugs, and the wining team is the side with the better random setup. its that ez. If you put WL in a group without guard and heal, against a 2-2-2 setup, ofc they will loose. But thats about party composition, wich is totaly random in most of the city instances, and therefore a bad argument for the balancing of class mechanics.
Same goes for oRvR an lotd when you look at the blob show that we got there. If you got 300 vs 300 players, you barely got equal fights. In that case its all about numbers clashing on each other. If you got 2vs2 warbands in a blob fight, and a 3rd one crashes in the backline from behind, then this will determine about win or loose, not the class mechanic of one class. As higher the numbers, as more irrelevant is the performance of one class. So you also presented here a satistic, wich is not very significant for the balancing of class mechanic.
SC win statistic is also difficult... cause you can avoid fights in SC and win with objectives. And, like in city instances, its more about party composition, premade vs pug, and so on... So the pure SC win statistic is also not that representative for the balancing of a class.
Btw im not a freebootaz player, i play both sides order and destro, and i play this game since decades (more or less

). And all i can do is giving the advice back to you. Make a destro char, and play against order during this WL plague going on. Preferably with a small scale setup, cause if you zerg down a 12man with 3 warbands, you can never get a feeling for it... Its neither crying nor bias that majority of destro is complaining about WL. There are reasons. Play it, feel it, you will get it.