The Mexican attacker enjoyed a stellar debut season at Old Trafford in 2010/11, netting 20 goals in all competitions before his output dropped off last campaign with 12 goals after a very slow start.
It appeared that Hernandez could fall way down Ferguson's pecking order this season with the arrival of Robin van Persie and emergence of Danny Welbeck but Chicharito has bounced back well with eight goals already this term and his boss is delighted he has been able to find form again.
"You could worry about that," said Ferguson in regards to a young player dropping off.
"But we examined his previous summers and the answer was there.
"You can play too much football, particularly young players growing and developing."
He added: "Javier is instinctive in terms of his space and movement.
"He has always had that. That was the attraction when we first saw him. He is good at finding space and has impressive speed off the mark."