Actually there is no
difference whether the girl breaks up or the guy dump her... in the
end, the relationship is gone.
Don't always judge relationship in a macro point of view, using the
power of numbers to justify certain stand like this, especially
when your figure is biased. Individually, the scene is different
for everyone. In fact, there are equal amount of guys dumping their
gf or even neglecting them.
It's all a karmic cycle. 
Cheers
