you're acting like Cowboy is some world beater, Conor has beating far more impressive fighters in my opinion.
The UFC wouldn't even risk the chance of losing their licence to promote fights to fix one fight, let alone the legal consequences and lawsuits that would follow suit. With that being said,
no need to fix a fight that was not needed to be fixed, let's look at Cowboys history
* Slow starter, check.
* Has a history of choking in the spotlight, check
* put him against a very fast starter, check
pretty predictable outcome.