As someone who has been involved in hiring, that's definitely not the case. The people I've seen who got hired are those who got through the interview process without any major red flags. There usually isn't any other potential candidate.

If there was, we'd try to hire both of them, because hiring is a long process, and if you find someone who seems good enough you want them on your team. You can always fire them during the trial phase if they turn out to be a bad fit.