if I understand correctly the main takeaways regarding the differences compared to a HU spot are:
- BB has a leading range on the turn even on "almost" blank (but with an equity shift but not polarity), this to force CO's medium hands out of the pot;
- On flush turns there is a change of polarity to a flop caller (CO), which doesn't happen in a HU spot where the flop aggressor maintains the polarity. I guess because in a multiway situation nfd on the flop is played more passively;
- On top pairing cards (J in the example) the flop aggressor maintains the J advantage and therefore there is no important leading range (as in a HU spot). I guess because in a multiway situation dry top pair is rather folded or used as a bluff than called on the flop.