Whatever the approaches may be, it seems to work for them. We can discuss different approaches all day long, but both Capello and Pep have won a shitload of trophies, to say they had amazing squads does not detract from the work that they've done. Lippi had just as good a squad as either of those two, yet people like Zach see it fit to give credit to Lippi, but not to the other two.
The even bigger problem is, if you really examine Zach's views, when the discussion is about managers, he would say Pep had an amazing squad and thats why he won so much with Barcelona. But if the discussion is about players, he would tell you that Del Piero at his prime was better than Messi, Zidane better than Xavi and Iniesta, Busquets is an average player, Pique is a poor defender. These are all valid opinions mind you I'm not saying they aren't, but you can't have it both ways. If Pep won so much at Barcelona because he had an amazing squad, yet when you compare individual players by his judgment Lippi had the better players. Therefore it follows that Zach has to think that Lippi isn't really a great manager, he only won so much because he had an amazing set of players.