I don't give a hello kitty about NPC battles or with a mate vs a Wapen who should demasted you both with the first few minutes especially you sailing around at full sail, that would literally be just four hits from the stern chasers to demast a Priv if he knew where to shoot, same deal for a Prince.
Testing I've had over a dozen solo battles since the update in a Prince vs other players in everything from Indiaman to a Connie. No one has more hours and kills in a Prince solo on this server since release than me. And I can guarantee you that the ship is now seriously nerfed because with battle sails you lose all agility and performance. Full sail you get demasted in a instant even if they don't know where to shoot.
Before with skill you could fight a greater range of enemy ships and be successful, basically anything you could tag was winnable. Now the performance is degraded so heavily you're pretty much left to hunt traders and warships with 250 crew or under.
Considering the dwindling player base and that most now sail 4th rates and bigger that leaves hours of searching to maybe find one enemy you're able to engage. And for that amount of time involved this just isn't worth it anymore.