I don't think they will be mauled.
I honestly think that both offenses will come out a bit tight, especially Texas.
Let me clarify a bit:
OSU's defense getting "mauled" means several big plays and a general inability to shut down drives. At least the 25 points you project, and maybe into the mid 30s.
I expect that the game will go in waves with some point in the game points falling like water, then things clamping down and the team that's behind laboriously closing the gap. I too would not be surprised with a cautious start from both teams.
I wouldn't be surprised if it ends up something like 45-38.