I guess the thing that male commentators have the edge on women is the fact that they've probably most likely been involved in football for a long while before women had significant recognition in football presenting, punditry, competitive playing etc.
This for me often means that those historical references like 'back in our day...' and 'I remember when...' and 'we haven't seen the likes of that...' probably don't often extend beyond recent history for female ex-players. Also the fact that we know the current male commentators have been in and around all the major grounds as pundits (and often players) for years just adds that air of knowledge in all the small areas and annoying though he is, people like Lawrenson do have that advantage - even if what he says is bollocks sometimes.
I would genuinely love to see more female refs, officials, presenters right now in fact...and I would like to see the womens game become bigger to the point where we have more famous players who will become recognisable and respected when they go on to commentate.