I think the writter missed the bigger picture, here. If you look at the chart, the difference between men vs women prefering iphone is marginal. The differences between undecided and those prefering anroid are very high. A better take might have been that, as another commenter pointed out, men have been more responsive to Droid's marketing campaign.

It should also be noted that many non-techie's I speak to think Droid = Android. They don't understand other phones offer android software as well.

The last chart shows similar things - older generations are less decided.

Another possible conclusion might be more tech savvy audiences prefer android.