Yeah, Antwer Canyon's boss balance difficulty is pretty lulzy, especially compared to the post-metastasis era Arad dungeons. Don't worry though, Oceanic Express will bring the cheapness right back out. I hate ALL the bosses of Oceanic Express, though Commodore Cannonhand and Beornan are pretty manageable once you know what to do (don't knock CCh up high, don't be to close to Beornan when he turns red, etc.). Enzo on the other hand is completely rocking my shit; started with 19 tokens tonight. Lost one to some silly glitching during an Iron Scale run. Enzo made off with the other eight.
But yeah, Shred was my nightmare during Alpha. I don't know what'd I'd do if I didn't have access to a bajillion tokens. I think he's especially bad for melee classes in general, though only my Silver Moon has fought with him so far. My Witch will be there not too long from now, and my Blade Master from the old game never made it.
Babylon is even worse, imo, though he goes down way quicker, despite also having Super Armor hax.