I'm always thinking just that any preset is based so fundamentally on how the character of an IR melds with how a particular pickup on a particular guitar with a particular setup, with a particular pick attack, etc. And I think it can line up really well for two players with pretty similar guitars. Like, I'll look at a Leon Todd video, where he's not trying to sell you a preset, but doing the awesome thing of showing how to use the Axe in different ways, walks you through his creation, posts his preset, and gives you his IR...and I try that preset, untweaked, playing the same thing he plays in the videos, and it sounds like garbage mixed with crap mixed with trash mixed with refuse, on a shit sandwich. And then I realize, "Oh, yeah, I'm not playing his guitar, and I don't hold my pick like he does, etc. If he played one of my presets on the guitar he's using in this video, it would also sound terrible." And that totally makes sense to me. I remember one of his where I had to boost my input insanely to get anywhere close to what he was getting, and still the EQ of the guitar was just bad with his settings. On the other hand, if he took that particular guitar and played through one my presets, it would massively overload and probably sound like the most biting harsh thing on top of being an unintelligible mess. Especially because I really favor these Saturday Night Specials, which are pretty low output, they can sound really weak on a preset made for powerful pickups, or they'll sound muddy on a preset made for a single-coil. Not to mention, my guitar has such a weird wood combination (Black Limba body with Wenge neck), I'm sure that's altering things too. Plus, the fact that my relatively low output pickups are also set very far away from the strings, and on top of that, my bridge is a Floyd. Normally a Floyd just seems to pair with high output fire breathing pickups. Mine is just a weirdo combination, but I love it haha!