Yoshi P talks about Warriors- from Producer Letter Live @ TGS

[Hachiko]

while that may be true I have never encountered a boss besides the demon wall that I could effectively tank in sword oath even then I still can lose threat against a decently geared bard if they go too crazy. The demon wall just does not do much damage that is the only reason it works. This is for end game content only though, prior to getting shield oath I always tanked in sword oath.

Your gear is almost to the point where you can tank all of AK in sword oath. I can pretty much do AK outside of Defiance, but I usually turn it on for the last boss just to make my healer's life easier. Though this would be much easier with a premade party of 4. I would not try it in a solo duty finder queue.

Also, you should be putting out significantly more enmity in sword oath than shield oath.