Which is exactly why I'm saying you're not understanding what people are saying. You're still talking as if people mean actual CVs when they're just using it as catch all term for previous performance.
Potter has a good CV in terms of a job like ours. He's shown he can stabilise league position in the PL, introduce a new style of play, get players not seen as 'good footballers' to play a possession based game, and improve performance over time. The tactical acumen you're talking about is his CV in this sense, it's not the document he brings with him to interview, it's the previous work he's done that allows us to decide whether he looks like a good option or not.
Pereira has a poor CV in terms of coming in to do a job for us right now - he has no experience at all in a top 5 league, has been relegated in his only experience of a relegation battle, and his performance has deteriorated in recent years. His record also suggests that he may be motivated far more by money than glory or challenges.
If you were looking to appoint someone with a view to winning the Portuguese league or Chinese Super League though, Pereira's CV suddenly starts to look more impressive than Potter's. The key is to look at how suited they are to the job at hand, not just the number of trophies they've won. People with good CVs can still fail, and people with bad CVs can still succeed, it's not an exact science, but there isn't a better way of judging candidates really.
