At first glance (and without actually looking into the details), that stat comparison looks to me like Ibi got more situational snaps for more passing stats while Brewu does more things across more snaps. Overall, similar production rates, Brewu just spreads his stats across more evenly across categories.
I hope my armchair analysis is correct. Guys without situational needs/limitations always get the nod from me unless a dude is a true outlier/wrecker in defined situations. Brewu as the allrounder is, IMO, a better fit with the other dudes ND will be rolling out around him. The potential on this line is stunning.