I can provide a little insight as well - I have been dealing with this status match for 3 months now - first e-mail sent July, then August, September and October. I have also called several times. I just called again and the representative put me on hold while talking to the appropriate department - I offered to provide the request number and he informed me that they already had all the necessary information. Why they hadn't acted, I don't even know but I guess like others have reported, they certainly need to be given a little push.
However, I can confirm that AA EXP gets matched to Platinum - if they only matched to Pres Plat in the beginning, I suppose I should have been more persistent. I will try to e-mail them back and request it even though it was mentioned in the e-mails I sent but if it's not offered anymore, I doubt they will reconsider. Yes, AA has 3 levels as opposed to CM's 4 but the qualification criteria is higher than their Pres Plat level - 100,000 miles vs. 95,000 and 120 segments vs. 90, well, to be honest - last year they were 100 but still more than what's required for Pres Plat.