I'm not a feminist or anything and I'd rather not talk about gender issues, but I often think women are likely to learn English easily than men. I believe gender plays crucial part in language learning, so men cannot learn English well if they take the same approach to women and vice versa.
This book is introduced in tadoku.org, so I skimmed through the preface and bumped into some hilarious, ouch, I'd better say excuse me in advance since it's kind of discouraging for men..., but quite reasonable comments. I've got to read more!
"she speculates that educated people may be less successful at learning languages because of the gap between their intellectual achievements and their status as beginning learners. Lomb believes that “a man usually feels this tension more acutely than a woman,” and that women, in general, have a stronger desire to communicate than men, thus making them more facile learners."