IMO this line is good.
A few thoughts...
Tech is good but they beat Texas on a last second play (really, two last second plays- remember that int? Or lack thereof?).. At Tech.
More importantly, at the end of a 4-week stretch for Texas. That takes a LOT out of a team. Mentally and physically. They had a few players out with injury that game- that doesn't help. They certainly were tired. And they flat-out were mentally tired from that stretch. Plus, 2 weeks before the game, Tech could sort of start thinking ahead a little. Not much, but just a little bit of watching tape of Texas here and there. Texas couldn't do that.
With all those things on Tech's side... they BARELY beat Texas.
Texas, on the other hand, beat Oklahoma by 10 at a neutral territory. But personally I did not leave that game thinking "wow, Texas was way better than Oklahoma". I couldn't see the whole game- Cross Country meet- and so I missed a good bit of the first half. But I've heard from multiple people that the refs were apparently favoring Texas a lot. Maybe that's true, maybe it's not, but if it is, that's one factor that makes the Oklahoma loss seem better. Also, remember that fake punt? I think Oklahoma stabbed themselves in the foot a good bit. My brother, who saw the whole game, thought that the refs were giving Texas the win. Again, I don't know if it's true... but overall, I left that game with the impression that if those teams played again, I would have absolutely no idea who to favor.
So put all those factors together and what do you get? Well, I'd give Oklahoma a slight advantage- Oklahoma's about as good as Texas, and I think a team that good would have beaten Tech 6 or 7 times out of 10 if not for that grueling 4 week stretch, and at a neutral territory. Add homefield advantage for Oklahoma and you get 6.5 points at least.