i have a 7 star, gear 11 Boba, his health + protection, after mods is about 35k. Primarily I've modded him for potency so his debuffs will stick
my DN is only 3 stars and gear 10, but i modded him for durability, and his health + protection is about 62k. I already use DN in my arena team. if i get him to gear 11 at some point i assume then he'd be at about 70k. so DN is much much more durable.
Boba's AOE ability block vs DN's cooldown reduction. DN's skill to me is just much better. with Boba, you might ability block someone AFTER they just used their special, so your debuff is basically wasted. DN's cooldown reduction is always helpful, even if your DN's not fast enough to go before their toons. Also ability block can be blocked by tenacity up, whereas cooldown reduction cannot.
DN's instant kills is more powerful than boba's execute, but will take longer to use, so i think that's relatively even
DN's basic dispels, to me this is more useful on more teams than DOT from boba's basic
DN's unique will help any team put debuffs on the entire other team when zeta'd. Boba's unique of ignoring taunt is good, but if only he's ignoring the taunt, he usually does not do enough DPS on his own to kill a toon, so execute might need to be used to dispel a taunt? seems like a waste.
Boba wins on speed, but has only half the survivability of DN. You can argue Boba when zeta'd can regain all his protection. That's true but you need to land a killing blow to get that. To me Boba's zeta is too situational, whereas DN's unique Zeta is always passively helpful to himself and the team overall
So I literally subbed out boba for DN a while ago, and i think it's totally worth it