I looked back at last season's posts and there is a league projector but that's not exactly the same as a power ranking.
I've got an excel spreadsheet from another guy I know on here that calculates power rankings using strength of schedule, margin of victory calculations. It's pretty solid although it rarely, if ever, puts a team with a worse record above a team with one more win, which isn't always true. It ranks teams in both conferences against each other as well so both conferences will be stacked up against each other.
Here's a couple examples of what I did in USA AAA1.
http://goallineblitz.com/game/forum_thread.pl?thread_id=1164384
http://goallineblitz.com/game/forum_thread.pl?thread_id=1202315
I've got an excel spreadsheet from another guy I know on here that calculates power rankings using strength of schedule, margin of victory calculations. It's pretty solid although it rarely, if ever, puts a team with a worse record above a team with one more win, which isn't always true. It ranks teams in both conferences against each other as well so both conferences will be stacked up against each other.
Here's a couple examples of what I did in USA AAA1.
http://goallineblitz.com/game/forum_thread.pl?thread_id=1164384
http://goallineblitz.com/game/forum_thread.pl?thread_id=1202315