Using the Training Software from PLO Mastermind, the following flop actions were suggested. Can someone simply explain in general terms why these actions were chosen?

6max.. cut off vs BB.

Cut off opens for pot.

Folds to us in the BB.

with KsQsJhTh7d, it says calling from the BB is the best play.

with KsTd9h8h7s, it says raising from the BB is the best play.

It would seem that the first hand is stronger then the second, so why is it choosing th