the more equips you have, the more likely they will fire off though. Unlike the sage, a knight is purely relying on a much lower chances to hope for the auto spells to work.
JT3 isn't very far of a knockback anyway, and with knight's peco for speed, you should walk up to them again during the 3 hit stun anyway.
I think someone should actually play around with the build and give some full feedback about all of this o_o...
I guess the JT3 would be better for the knight than the sage in this case. Profs though would probably rather have bolts cause they can double cast and probably do more dmg than a JT3 normally will do >_>