bad english anon here,

i think u wrong on 2 counts. first is, weapon skill applies as modifier to entire raw stat or combat effectiveness.

second is, only main and support summon aura bonus apply, and support only if u friends with the guy.

i am making screenshots to show my proof, but in the meantime maybe lets talk about ur test method. are you using battle values or the kamihime info on home page to calculate? aura and weapon skill only apply in combat.