I got him once in person (I won a half time shooting contest in my youth basketball days). He never signs "kareem" and it's in that style, but that doesn't look good to me. But I'm no expert with his signature. I just think it's off a bit.
I think it's real, Josh, but if you're comparing it to one you got when you won that halftime shooting contest I can see why it doesn't look right to you.