What ruins this revenge flick is Madea's boorish, bull in the china store act reminiscent of the sassy black woman stereotype popularized by Sanford and Son's Aunt Esther. Loud and ignorant, Medea tends to trivialize every scene.
This movie really touched upon an aspect of black life that we can all identify with. More realistic then all of these ghettofied movies that have been presented as representation of black life previously.
What works in the theater doesn't always work in the movies. Part of the problem, as mentioned, is with the broadness of the material. But it doesn't help that the script relies way too much on syrupy voiceovers.
Perry's writing is dramaturgy of the most primitive kind, with melodramatic situations, tons of woozy sentiment, and humor which might be described as 'lowbrow,' were that not probably too elevated a term for it.