I'm having a hard time defending this film and Armand and Albert's relationship as being anything other than a transfer of a heterosexual relationship.
Albert does a fantastic job at replicating many stereotypes of women in heterosexual relationships. From the beginning scene, he is complaining about being old, fat, and unlovable, and it only continues to go downhill from there. If anything, if he is trying to act out female, his representation is damaging to both gay men and all women by implying that the femme man in a gay relationship always acts like a female (and that one of the two in the relationship must be femme), and that by acting female, all women act this particular way and ascribes specific acts and characteristics to "female". He is obviously the lesser of the two in a relationship. He isn't as smart as Armand. He seems to be clueless or uncaring about many things, especially important issues. He's hysterical about everything. He's jealous and insecure. He whines frequently about almost everything. He pouts and throws tantrums and storms out of room in a sobbing huff. He is all around a weaker person than Armand.
The only positive thing I noted in the film was the sense of community and understanding between anyone who was queer in the film. And also, in terms of the director supporting gay marriage, I thought the film was a testament to real love that anti-gay activists like to say cannot exist in queer relationships. It showed that not only could they maintain a marriage, but they also raised a son (who I couldn't stand, btw) and rallied around him when he needed them.