Tenzen needs to stop self-skillchaining.

[Nyarlko]

Your THF needs to practice skillchaining. THF works great for CP parties, and if you didn't have to have the caveat of "I don't know how to skillchain", there shouldn't be any issue finding a group. (You can also always make your own.) There is no way around having to learn the timing for closing/continuing a skillchain. Even mages need to learn the timing in order to Magic Burst.

THF is better at closing than opening generally, due to stuff like Sneak Attack and Trick Attack, and Rudra's being a beast of a ws. Rudra's > CdC btw, almost always at comparable gear levels and until you get to the higher end of gearing options. The skillchain/magicburst system itself is actually pretty forgiving until you go past 3-steps. Just practice your timing and make sure you are using ws that actually sc together.

Item level of the player is the primary factor for Trust stats, with add'l small boosts from Cheers and Rhapsody KIs. I don't remember if it's "only main hand weapon" or if it's average ilvl, but ilvl sets the baseline.

You really should consider just changing your trust setup, since your complaint boils down to "Tenzen would be great, if he wasn't acting like Tenzen. Please make him stop acting like Tenzen." :x

My usual solo/dbox Trust setups as melee jobs are always pure support to pump ME up rather than slow everything down by using melees who might/might not (most likely not) be able to contribute more to damage output than buffing up a player. Forcing magic haste alone is going to increase both of your ws rates by ~40%, which should greatly outweigh whatever any melee trust is going to be able to put out.