Alabama being more talented is a reason to rank them higher. What previous teams full of players not on the current roster did is meaningless.
First, LSU lost to Alabama for every season any player on LSU has been playing and for every season any player on Alabama has been playing. Even since these kids' high school days.
The current roster of Alabama players has never lost to LSU, but nearly all of them has won every time. The current roster of LSU has never beaten Alabama, but nearly all of them has always lost to Alabama.
Second, every player on LSU has heard that no game matters more and that they wont go anywhere until they beat Alabama.
I get it. Its quite analytical to say what you are saying. It just dismisses a mental aspect to sports that is hard to quantify. LSU hasnt scored two of the last three years against Alabama in "show downs." But, i think you know this.