That's not a bad success rate at all. I'd say my first attempt rate is probably pretty low. I'm always having to spin it around and feel my way to victory.
You're able to figure that out in complete darkness though? I mean I guess you could but it would probably take twice as long as just throwing it on and saying "Nope, that feels backwards."
Yes, I can do it in complete darkness. You hold the shirt by the shoulder seams and feel to see which side has the dip for the neck - it isn't rocket science.