The cannabis cup does not reflect the seed market at all. The judges have to sample too much stuff in a short time. Seen this (hahaha) Cervantes video where he was a judge? That's ridiculous, there is no way somebody can really judge weed like this.
Then there's the bribing.... was it Barney's who got banned for that a few years back?
Even if the winner is good weed it may have been a clone only, a lucky F1 or a seed from a hermie like gg4. But getting seeds which reflect the winning samples can be hard to impossible with some strains.
And why the fuck do people think that they can just go buy some seeds and produce "cup winning" gear? And what is "cup winning gear" anyway? I have never had the chance to score an ounce to do my own testing. A couple of bongs or spliffs may get me stoned (or not) but i won't tell me anything about long term properties like tolerance or how it helps me sleep or whatever. So in my opinion the cannabis cups may be fun to visit but it's marketing which doesn't reflect the real world at all.