I'm sorry but I don't think this is fair. The context of the original post was saying if Poch did what he did for us at Everton, would people take him here after that? I'd say 1000 times yes, he did a ridiculously good job. If you take Everton to regular top 3 finishes, 2 title challenges and a CL final with the constraints he operated under, you'd be rightly seen as one of the best managers in the world.
Poch didn't luck into anything. Even if we accept he inherited some good talent with potential, not one of them had reached the level of performance they ultimately reached under Poch. Similarly, we had for a few years been a side that signed good young players and hoped they developed, but we never made a regular play in the top 4, title challenges, deep CL runs etc.
He is the common denominator and the reason they reached that peak level of performance. Maybe one or two of them would have developed into world class players ala Bale and Carrick. But all of them at the same time? That's Poch.