Early rankings don't mean anything. Texas A&M was never a good team. They were ranked because they were unbeaten and had beaten South Carolina who was vastly overranked themselves. And they were coming off an OT win to Arkansas at that time. ARKANSAS. their other wins were Lamar, Rice, and SMU. Not exactly a whose who. Texas A&M never should have been ranked 6th as they just aren't anything more than an average team at best. Also not sure why you are bringing up the Alabama score against A&M and comparing it to the teams from Mississippi. Why not bring up the 23-17 score, you know when Alabama lost to one of those teams.
Alabama played well for the first time all year. Maybe that is a sign of times coming or maybe it is just a reflection on how bad Texas A&M is. Are we supposed to ignore Alabama's other games. Like say the 14-13 beautiful win against Arkansas. Or the 23-17 loss to Mississippi. Or the 10 point win to West Virginia. Or the struggle against Florida before tacking on some late scores to make the game look like a blowout. Maybe Alabama runs the table. They certainly have the coaching and talent to do it, or maybe they lose to Miss. State, Auburn, and LSU. Who knows, but I wouldn't put much faith in a blow out against Texas A&M.