There are a thousand, maybe more, reasons why folk don't get the gig or the place in the band, just like going for a job interview. One may tick all of the boxes, but there's more than competence or professionalism (although that helps, obviously, for most situations...). Don't get hung up about the gear; it's only one tiny factor in a complex equation. Maybe they don't like suede shoes, or curly hair, a squeeky voice or a limp handshake. There are no rules, really; each meet-up is different, so just go in with a positive attitude and a smile. If it's meant to be, it will be.