MQ is quite right, the defence isn't that he's drunk, it's that he genuinely believed the woman was consenting to sex.
The jury believed him - or at least, didn't care whether he was lying or not - because they are a reflection of society. And society's assumption is that women are available for men's use and that therefore, it is reasonable for an average man to assume that any passing woman is consenting to him fucking her, unless she fights him off so vigorously that either he or she is injured in the process. And even then, IMO due to the porn culture, juries are now under the impression that lots of women enjoy being physically hurt during sex so they are willing to give the rapist the benefit of the doubt even where there are injuries, because they have more empathy and sympathy with a rapist, than they do with a rape victim.
Basically, a man can say that he genuinely believed a woman was consenting to sex and the jury will give him the benefit of the doubt, because without realising they think this, they really don't think that women being raped is that big a deal. Whereas being sent to prison, is self-evidently a big deal. If you believe that a woman is there to be fucked, which is what our society believes about women and which is what the porn culture tells us all the time, it seems incredibly unreasonable of women to then complain when we are used for our function. And to then have the temerity to expect society to ruin a man's life for having used her for what she's there for - well how fucking unreasonable is that?
We are fucked.
Quite literally.
By whatever Tom Dick or Harry wants to fuck us.
There is simply no legal protection from rape. Except for a tiny minority because the state has to sent a handful of rapists to prison, to enable the rest of society to believe that we are more enlightened than the Taliban and to remain in denial about just how barbaric are our attitudes to women.
