Last year was a complete mirage as their offensive line was so unbelievably bad that the only offense they could muster was the 4th and 18 Madden Hail Mary. When the only way you can score is to just throw it deep and hope something happens, your big plays are artificially inflated in ways that don't reflect your offensive output. Baylor doesn't really run much Power run game in 2018 outside of 3rd / 4th and short, where they go with a 23 / 22 package and an I formation w/ Hurd as the HB ( they are really good in those situations ). Their OL is not fixed yet and they can't execute the zone scheme that Rhule clearly prefers yet, but it is much much better than 2017. That's the reason for their offensive inconsistencies.
In terms of pure scheme, Rhule / Nixon clearly want to be "multiple" and game plan for the opponent, which could not be more different than the Briles approach of running the same ~12 plays against literally everyone in literally every situation. So against Duke and their quality front 7 they spent the entire game on rollouts and runs the stretch the defense horizontally. If their WRs could catch, they would have put up a lot more points / yards. Against K-State they pulled the TE off the field, spread them out, then pulled their OL constantly into the Boundary to get an OL matched up against a Safety ( KState ran a lot of Sky in that game ). Baylor ran for something like 260 yards and over 5.0 YPC without getting Brewer involved in the run game.
Against Texas, you can be assured they will try to scheme against whatever they consider the weakness of the defense and avoid whatever they consider the strengths. The problem for Baylor is that I don't think they have the weapons yet to really take advantage of that ( stretch vertically, Brewer doesn't have a strong arm, play with 12 / 21 packages against the Lightening Package, they don't have the TE depth, hold up on long developing pass plays, their OTs are still a work in progress ).