u/Superman-Y2K

I’m not trying to be disrespectful as I’ve been a wrestling fan for most of my life. I just want to understand other perspectives. Why would an autograph card of a character be worth anything? I understand football cards, etc., because it’s their actual name, but Hulk Hogan (or whoever else) is a character, so that signature to me would mean a lot less than Terry Bollea signing it, for example. Is it all a market thing?