‘Big’ team managed:
Ancelotti:
Juventus, Milan, PSG, Chelsea, Bayern, Real Madrid
Enrique:
Roma, Celta, Barcelona
Emery:
Valencia, Sevilla, PSG.
Silva:
Watford
I do not agree with your statement, sir, and do not understand how you came to your conclusion.
The reason I came to my conclusion is
Ancelotti managed all big clubs with unlimited resources and able to purchase all the best players. Question is can he build a team at Everton with limited resources and unable to have any pick of player in the market. Maybe but highly unlikely.
Enrique: Failed at Roma big style Celta finished 9th and Barcelona would finish top 3 regardless of who is in charge. Could do a job but a massive gamble
Emery: Has done well with Seville but lots give the praise to Monchi. PSG a top team in there own right but slung a 4-0 lead away when Barcelona won 6-1.
Silva: Won trophies with Olympiacos and Sporting. Won a lesser team Estoril promotion first go and took them to 5th in the top tier and qualified for Europa league.
Went to lowly Hull but despite a good effort couldn't keep them up. Started well at Watford but was it injuries to his team or was it his head turned.
All of them a gamble but all I ask is to put some perspective on the Clubs in the PL that Silva took over. What did you expect him to achieve at Hull or Watford....did he make them worse...no. Do you think realistically any of your mentioned could have made Watford or Hull much better.
Still think Benitez is the safest bet but as he has shown with limited resources the task becomes greater