You're right. Bar passage rates are pretty much irrelevant for determining how good a law school is, especially considering Tulane is a national law school and LSU is a state school. That's not a knock, but a distinction between the two. Only a fourth of Tulane's students remain in Louisiana. Tulane's program isn't geared toward passing the bar in Louisiana, so naturally LSU students have a leg up. The rankings, on the other hand, consistently put Tulane in the top 50 and LSU somewhere between 80 and 90. If I was somehow trying to make the case that LSU was better, I'd stick with bar passage rates (although that doesn't work either when LSU hasn't been dominant as of late).
LSU and Loyola would dominate in state employment rates upon graduation. Their graduates overwhelmingly stay in-state. As for starting salaries, I'd like to know where you can back that up. It's pretty well documented that Tulane has the highest starting salaries for any law school in the state, but if your contention is that those graduates who remain in Louisiana after graduation are below LSU and Loyola, that is information I'd love to see.
To the others: Sorry for the threadjack. My point was never to get in a discussion about this, but rather to point out that even though I started out at LSU, I came back to UL, greatly enjoyed my time and got into a great graduate school. UL is what you make out of it, and the options are endless for UL graduates. I couldn't be more proud of my school or more pleased with the education I recieved.