First of all, very nicely done.
It's rare to see good players sharing good builds on this forum
I think the build Cetus posted is a great answer to the cliché that thf can't do solid single target damage.
Is it the best dps build for boss beatdown in raids? I don't think so, but for sure it's perfectly viable.
And I truly love that gear, it's so great! Almost perfect. I'm using a very similar setup on my actual toon... and I'm so jealous because the celestial outfit is better compared to the heavy armor that lacks quality deadly. Lucky monks
Barb vs fighter? It's not that easy to decide a winner.
I can share some thoughts about R10 quests, because after the last changes I played a pure THF barb and a THF fighter18/barb1/fvs1. Both in Fury. Both truly shine.
Never running out of adrenalines is huge.
As pointed out, VKF capstone for 5% speed and 20 mp is a true beast. BUT going for VKF capstone means you need support. I pug very often, and usually, I want to be self-sufficient. So I need falcon, because playing in Fury without being able to bypass fortification sucks.
Looking at stats, on my fighter18/barb1/fvs1 I had some goals: 100% standing doublestrike (done), 200% strikethrough (3 granted targets), 100% helpless damage (that's not a must have, but in quest it's still relevant imho).
Ofc I also took different feats, because for quests I want speed above all. More speed = fastest completions. I took spring attack, I have sprint boost, and barb 10% movement speed. Cleaves are real good now, so I took the feats. Sadly, Whirlwind it's still useless due to the terribad animation you can't interrupt
Fighter is great, you have sky-high tactics, you are tough, you have raw damage, melee power, and strong active attacks. Half-Orc for Fighter it's almost mandatory imho.
Barb is good for splash: +10 STR (4+3 raging strength +3 power rage), 4 points in FB (1000 temp hp x7) and 4 points in Ravager. The number of Rages and Power surges is enough for quests. FVS is for trance obviously (you want to hit). And yes, I have almost endless supplies of Toven cookies
So, how is the fighter split compared to a pure barb? Btw I fully agree with Cetus, for THF Barb the way to go is pure: FB+falcon+VKF 11.
Barb has better sustained basic dps (Tail crit profile is unrivaled), 6 cleaves (as I wrote, cleaves are real good now), and better survivability (improved uncanny dodge is huge).
The Fighter 'delete' button is a lot better. A Fighter can be Half-Orc (pure barb Half-Orc is complicated because you badly want 100% doublestrike and dropping VKF for haste boosts and 5% doublestrike really hurts. Pure barb means Aasimar or wood elf, imho), and benefit from 2 auto crit attacks. Good death is good too. Also, Fighter is the only viable option if you want to use Magmatic Cleaver. And Magmatic Cleaver is a great weapon... it's a great axe in fact XD
Imho, the Barb is easier to play but it can still be fun and it's super strong right now.
Fighter has more stuff to handle, and it's super strong too.
For questing, nowadays I don't see better options than Fury barb of Fury fighter18/1/1.
For raids... well... it's an entirely different world. But if you want to raid with a THF build, Cetus did a great job.