I went and got the Jaw Fossil/Tyrunt. Tyrunt and Tyrantrum were basically the only Pokemon I was absolutely certain I wanted to have in my party. Love the typing and like that it's modeled after after a Tyrannosaur.
Yeah, Tyrantrum is superior to Aurorus competitively, especially so after it got its Hidden Ability of Rock Head. It's too bad really, Aurorus could've been pretty decent but they made some kind of odd choices for it from a battle standpoint. It almost looks like they were trying to make it some sort of tank, but then didn't give it any sort of reliable recovery move like Recover, and Rock/Ice is an absolutely terrible defensive typing.....but is a fantastic offensive one, especially when you have an ability like Refrigerate (just look at how much Pixilate and Aerialate do for the Pokemon that have them) and a really neat move in Freeze Dry. It also for some bizarre reason does not get Power Gem. Oh well.
But yeah, there's no real need to go for competitive viability with your in-game teams at all.