I'm not sure what you mean when you say those two performances 'skew the numbers'. OU, maybe, just because their offensive game plan was shit and they basically gave up. But the performance against Alabama is close to what we've seen pretty much every other game except Tech.
ULM - Texas gave up 10 points to ULM, Alabama is the only opponent who held them to fewer (7). The rest of their competition is Sun Belt so its hard to compare, but Texas defense went out and did their job.
Alabama - Texas held Alabama to 20 points, that's 29 points below any other game this year where Bryce Young played. Alabama scored 24 in a game where they started a QB who had three turnovers and couldn't complete a pass.
UTSA - Texas held UTSA to 20 points, 10 points below their second worst offensive performance and 16 points below their average for the season.
Texas Tech - Texas defense shit the bed. Texas allowed Tech more than their average and couldn't get a stop at any point.
West Virginia - Texas held West Virginia to 11 fewer points than the Mountaineers second worst offensive performance and 19 below their season average.
Oklahoma - total fucking domination.
Iowa St - was rough at times but Texas defense came up with stops and turnovers when they absolutely had to. Offense didn't have it this week and the defense did enough - kept it to 20 points.