Third person didn't help Twitcher having good combat in the slightest and imagine shooting guns in third person.
Have Codexers become retarded?
Witcher 3 combat was mediocre not because of camera, but other design problems: heavy attacks are underpowered; light attacks are overpowered; quen and axii make most fights trivial; defense is very effective and easy to do; there's nothing to prevent the spamming of the best attack+spells; because of mediocre enemy design most encounters are pretty samey; there's really no learning curve to the combat or any cool stuff to keep it engaging
With that said
3rd person camera
IS better than 1st person for melee combat, for the following:
1) FP is bad for gauging distance, because obviously screens don't allow for depth perception, but a camera placed laterally or overhead to the PC is indeed of better help to perceive positioning and reach
2) TP also allows players to better obvserve what surrounds them, but more importantly you're aware of your PC's entire body and its movements
3) Because of the above TP simply allows for the game's combat to feature more complex actions
Now before you call bullshit on the 3rd reason, answer me this.
How many FP games do you know that allow you to perform something like a spinning roundhouse kick or any kind of grappling?
None.
Because in FP the camera is tied to the PC's movements, and having the camera quickly spin or roll around (and then stop for 3 seconds at the opponents crotch) without the player's input (taking control from him) would be very jarring
That's why in all FP melee games almost the entirety of the PC's moveset are very straight and simple attacks and overall less agile than characters in TP titles
Because FP camera just isn't suited to have the PC perform agile and complex moves where he can make use of his entire body
I mean it's no coincidence that the best brawlers are all third person
And it's also no coincidence that the best shooters are all first person
FP is better for action games that rely a lot on camera control
While TP is suited for action titles that depend mostly on button inputs
This doesn't mean there can't be good or even great TP shooters or good FP brawlers (there wasn't been any great one though), we know this to be false
But the truly best shooters are FP, and the best brawlers are TP