They have everything in common except that you can tbn party member and you can use tbn more in stormblood.
Thrill is 10s. and Thrill in shadowbringers isn't just 20% it have additional effect that increase healing receive by 20% and that make it as strong as tbn. Couple with the fact that DRK don't have self heal on demand like Equilibrium it allow WAR to came out of tank buster with more hp unless it is magical attack.
When it first came out in stormblood TBN is 20% same with Thrill. It just that it can be used more frequently due the fact that you can convert the mp and store it as blood gauge. In term of defensive it is the same with have Thrill on yourself. Citing how "it need to break" make it so much different is like saying you're supposed to waste Thrill on weak attack that won't break it.
Since TBN has been brought up let me tell you why shadowbringers TBN suck= It can only hold 1 Dark Art. So what happen when you need to use 2 tbn before raidbuff came? you gotta let loose 1 EOS outside of raid buff window. Sure, while in theory tbn can be used like 4 times per minute but the more you used it outside of raid buff window the more you lose dps. Great huh?
And since you're here again let me fill you with the fact about "scythe". In XI, scythe isn't exclusive to DRK. DRK can also equip Greatsword in XI. DRK wasn't even the first melee that could equip scythe in FF history. Life Drain ability on the other hand has been with DRK far longer.
Further more, Reaper as showed in the trailer have nothing in common with the real dark knight. DRK iconic ability isn't having a ghost as sidekick and it certainly not edgy berserker that keep spam the same red slash move.
When did I claim XI is perfect? XI isn't prefect but at least they manage to make job retain it's identity. XIV on the other hand have a chronic identity problem and imbalance at the same time.
And about the "Just because you prefer". Sorry, I don't believe I was supposed to feel impressed when they serve me a Cola when I paid for a Coffee in a Coffee Shop.