Indeed, very releavant comments - in many cases even when Gartner folks aren't themselves confused about it, some of their "customers" clearly are... As a result, they end up buying a pig of an "enterprise" (often, in name only :-() software that will cost them piles of both money and headache, instead of going with a much more nimbler appliance vendor (but I digress...)
Another perspective on vendor rankings Security Incite: Analysis on Information Security:
"Him[an IT from an SMB]: 'But they aren't in the Leader Quadrant.'
Me [Mike Rothman]: 'So what? Why do you care who sells a lot into the enterprise? That's not you.'
Him: 'Because I care. My CIO used to work for a big company and he believes in the MQ.'
Me: 'Then he's an idiot.'"