Michael, that is just amazing progress. You should be so proud of yourself.
I've always thought that when it takes 50-75 pounds for anyone to notice I've lost weight ("have you done something different to your hair?") it's because once I fall into the category of very fat, it's just sort of all encompassing.
Most people look and think "wow, she's very fat," and they don't bother to break it down into degrees. So when I'm losing, but still very fat, it doesn't register.