New Jeans are definitely more vocally talented than twice as a group. New Jeans doesn’t have any “terrible” vocalists so they’re not gonna fear signing live or have terrible encores like twice
They honestly have no huge flaws a group. That’s what makes them very popular as well. They don’t really have any super poor vocalist or dancer or lacking in stage presence.
The question of whether you need one stand out vocalist/dancer Vs a group of perfectly capable but not stand out talent is hard to answer
Imo New Jeans do it right.
I think news jeans are more talented than both twice and BP actually.