U don't get the portrayal dude.
I get that u hate King and Queen with a passion, but u can't close your eyes and ignore the portrayal.
Jack looks up to his elder brothers, they scold him and while they're doing that, he's looking down to the ground.
In the end he even apologises AND has a lower bounty.
Everything in the story points to Jack being below King and Queen, that's why calling him a YC3 makes sense because he's the weakest out of the calamities.
Don't come with the "authority of an older brother excuse".
Peros is older than Kata, but have u ever seen Kata or Daifuku or Oven look down when Peros was talking to them.
It's a sign of power.
Again, Base Inu/Neko couldn't even scratch that Jack. They're hardly high tiers