Hey Tempest did you know that in the opening of the 1000 episode of OP are showed the members of the Straw Hats from the weakest to the strongest?
this is the order: Usopp, Nami, Brook, Chopper, Robin, Franky, Jinbei, Sanji, Zoro and Luffy
this is the order: Usopp, Nami, Brook, Chopper, Robin, Franky, Jinbei, Sanji, Zoro and Luffy
+ means that the value that the specific character scales to is a value that is above the halfway point of a tier.
If a tier "Tempest Level" is 1 megaton and 5 megatons, anything between 3 and 5 would be Tempest Level+.
But that value still falls under Tempest Level, it's just in the higher end.
So nada, can't restrict it, and if you want to then the match wouldn't be added