(Well for a start, as you obviously know, Islam is not 'a' culture at all: Saudi is not Morocco is not Iran is not Turkey is not Pakistan is not Burnley. As to the charge of misogyny, the Qu'ran, Bible and Torah all contain passages that explicitly and unambiguously put women in a subordinate position to men. I think it's fair to say that all three Ambrahamic religions are inherently patriarchic, and that traditionalist strains of all of them do tend to be pretty chauvinistic. But that's a discussion for another thread.)
You're dead right, of course, that 'we' (whoever 'we' are) have by no means got everything worked out and there is still all manner of inequality and dysfunction, even just concentrating for the moment on sex/gender. (And men have 'ideals' to conform to, as well: look at how much aggression - from low-grade chucking-out-time aggro to full-on urban gang violence - comes from men's and adolescent boys' ideas of how they are supposed to behave to be 'real' men). At the same time though, we should avoid the relativism that renders any kind of critique meaningless by making everyone just as good/bad as everyone else.
Then there's the point about who is a Muslim and who is a 'Muslim'. Vim mentioned the Paris riots of a few years back; I remember at the time reading a very good piece explaining that, as far as the mainstream French media were concerned, an 18-year-old from some shitty bainlieu who's rioting because of chronic unemployment, discrimination and all manner of social exclusion becomes a 'Muslim' because his parents came from Algeria, whereas in fact he's no more a Muslim (or even less, perhaps) than the average 18-year-old white Parisian is a devout Catholic. Which brings us back again to the issue of misogyny; your Stella-swilling wifebeater (in Britain, in 2009) is probably not a conscientious church-going Christian, but he has a set of attitudes towards women that have a centuries-old religious mandate. The same can be said of the Asian rudeboy on the street corner yelling sexist abuse at any white woman who walks past. It's not that either of them practises the religion traditionally associated with their culture, but those cutlures' values are strongly linked to their respective religions.