1) That makes sense
2) That would only make sense to me if they all three played head to head and went -1 against the other two or none of the three played each other. Not saying that isn't the case, but just seems odd, when head to head can determine it.
If LSU has played UK, it would be easier to break the tie. Since we all didn’t play each other, they go to record against highest seeded common opponent. And LSU breaks that tie to get the 6th seed.