How good will Dantés be?

Dantes isn't terrible, his kit somewhat places him as a balanced quick avenger, and in that role he's pretty decent... but the problem is Buster/Arts is the meta and will be the meta for a very long time because of Magic Man, and Jalter is very powerful regardless of meta, with huge damage potential.

If the meta was quick based, Jalter is op enough that she might still be better than Dantes, and Magic Man exists, making Buster/Crit teams and hence Jalter the queen of Buster/Crit very op. Dantes isn't bad, he's just faced with overwhelmingly op competition, and he's sort of mediocre.