I think you're talking about a slightly different scenario. All 3 of those managers have their limitations but they are proven in being able to rescue a seemingly doomed club from relegation and that was what I was specifically referring to.
The Baggies ARE doomed because there is something fundamentally rotten at the club at the moment. With that going on, there's no way that the team will play for each other. They need a Pulis or Dyche or Big Sam to pull off a recovery to save them. Instead they've got Pardew.
They're toast.