"Our situation last year was different to Ferrari's," boss Wolff told Speed Week.
"We were fully involved in the world championship battle between Nico and Lewis, and so neither of them was overly worried about the development of tyres for the future.
"But I believe that you only very rarely find the silver bullet in formula one that gives a decisive advantage. It's more about putting together a lot of small details.
"Perhaps the credibility of Sebastian Vettel as a developer and his statements about the tyres had an impact at Pirelli. Perhaps they listened more carefully to what an experienced driver says compared to a young driver.
"But I have no evidence of that. For me it's just a personal guess," Wolff added.
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