Hello guys. I solved Qs9s4s board using PIO in BUvsBB spot and saw an interesting strategy : as PFR we use mixed strategy with our hands considering that BB will overfold this flop a lot. I am interesting, why PIO has checking range here if we can autoprofiting with all our range using one strategy?

As we see, BB fold 43,7% while MDF is 33% facing this size. So why we do not CB 100% of our range?

Thank you guys!