The basic problem with your analysis is that AIG was is the hole insofar as credit risk is concerned.........however FNMA is and has been flush with cash since the Treasury stole $187 to cover TBTF banks and dumped the same $187 on FnF to cover for it.
Currently, talk about any reverse split on a company with an Earnings of 11B/year is a non sense because we have now an $11 EPS. with an a reverse split of 20/1 as AIG, we will have a $220 EPS. this is a non sense!!
I was in aig at that time and the only thing good about that deal was the warrants given to shareholders. They didn't come close to making up the difference. I was in a little high at 2.20 so really the warrants was the only money made.