Hi
I was looking at the equilab ranges and found something weird. In the "PokerEvolution" branch of the preflop ranges tree, there are two subranges, one called "3bet vs pfr / SB 3bet vs openraise" and another called "BB defense call / 3bet".
First, what does "3bet vs pfr / SB 3bet vs openraise" mean? Is that range only intended to play from the SB vs an openraise or from any position? Shouldn't it be the other way around?
Second, why the ranges to 3bet from BB are tighter than the ranges to 3bet from the small blind?
Ty in advance.
VS