Imagine the roles are reversed.... you are a young woman standing around minding your own business and somebody is demanding your attention and then screams in your ear when you don't pay enough attention - to a complete stranger I might add
Even in your first response I thought that you understood that I was joking/exaggerating. I can see that you lot are not exactly the most serious crowd, so it surprises me that you can't recognize a half-joke when you see one. If you believe that anyone would really yell in a girl's ear (outside of a club that is) and expect to get her attention that way you seriously have rocks for brains. IT WAS A JOKE. Or, more to the point, it was a way of saying that, compared to girls from other countries, J-girls do not seem to look at strangers very much.
And since you folks seem to demand complete seriousness, I will also say that in fact, getting their attention was the easy part. Although they never looked at me, even and especially if I was looking (not staring per se) at them. A simple "sumimasen" would stop even the most hurried looking young lass right in her tracks. She would stop and wait (sometimes impatiently) for me to say whatever oh so important thing I needed to say.
Anyway, this is not about the best way or worst way to pickup girls, and even if it were I would never ask a female for such advice. They are always beyond clueless about such matters even when they think they are experts.
So I assume that since you folks are chatting away so happily about other matters that either none of you have a clue as to the answer (very likely) or that none of you particularly care. I'm not surprised that you don't have the answer to the primary question, since that is a tough one. But I am a bit surprised that no one cares to chime in on the all-look-same or height issue.