Excuse me, but who/what are Kia Ora and Metta Zenda? It's been bothering me for a long time. I think you're not the only one to say that thing in your posts.
Also, I think the reason there appears to be more homo girls than there really are is that sexual orientation and with whom you actually are are two very different things.
There are two relatively frequent (well, probably) cases I can think of.
-My case: I'm not especially sexually attracted to women, but do fall in love with them much more easily, while so far I have seen guys as nothing but sexy.
-The older person case (even though it probably happens to young people as well, although not as often): they may be bi, but both chance and how badly society sees homosexuality (especially male) have made it so that back when they were still supposed to be guys, they got in a durable relationship with a women and have stayed with them through and after transition, because their girlfriend/wife still loved them regardless.
Even without a durable relationship, there's also habit that's important. I'm not experienced at all, but I think that if you've spent all of your life dating or wanting to date girls for other reasons, regardless of your natural attraction (which is very relative anyway as it's flexible and can change), just by habit, you'll have a tendency to look with relationships with girls rather than guys, because most people tend to go with what they feel most comfortable with, especially when destabilized (negatively or postively, as is the case with transition), rather than opt for change and excitement.