"Each driver has his own way to prepare," team chief Toto Wolff is quoted by Speed Week.
"One wants to be perfect and is a meticulous worker, while the other relies more on his instinct.
"Sebastian was always a worker, so perhaps he understood earlier on how to get the tyre in the right working window. We have to catch up now," he added.
Wolff admitted the Mercedes car is also to blame.
"Our car is difficult to set up," he said, "particularly when it comes to getting the tyres to work optimally. But we know what we are lacking."
What might also be lacking in forthcoming races is motivation within Hamilton, who according to some experts can become quickly demoralised.
"On the contrary," Wolff insisted. "Lewis is not a problem but rather a positive influence, and I see him wanting it more than he did last year.
"Also for the team as a whole there will be no problem in this regard," he added.
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