In terms of a Super Regional, the national seed (Top 8 seed) gets to host ... provided they advance and provided they bid for a Super Regional. If both Louisiana and LSU were #1 regional seeds ... and they were bracketed in a Super Regional together ... one of them would be a national seed and that team would host should they win their regional. Obviously if both teams were a national seed or both teams were not a national seed (but #1 regional seeds), they would not be bracketed together for a Super Regional.
If both teams were slotted in the same regional, I can virtually assure you that the #1 seed would host. The #1 regional seeds have hosted their respective regionals every year for the past five seasons (since 2008 when #2 Michigan hosted #1 seed Arizona). This was not always the case, obviously. The Cajuns hosted as a #2 seed in 2000. In fact, for a while it was common for 1 or 2 #2 seeds to host a regional each year. I even recall in the old 48-team format when #3 seed Texas hosted the six-team regional in Austin. Of course, much has changed since then. We have had a steady migration from money and facilities to performance on the field over the years (in the context of awarding host sites). As it should be.
Make no mistake ... the game matters. Due to Louisiana not playing conference ball in the SEC, it does matter more to the Cajuns. I expect this will be a win against a Top 25 RPI opponent come selection time. Hopefully they have more of these opponents (meaning I hope some Cajun opponents move into the RPI Top 25 by year end). The Cajuns can also really help themselves by winning the weekend series vs. Alabama.
Brian