A little more than a month ago, the Spanish sports daily Marca said the British team's MP4-28 - like Ferrari's current F2012 - will have pull-rod front suspension.
Until 2012, the configuration had not been seen since Fernando Alonso raced a Minardi more than a decade ago.
"I think we learned a lot in this period and used that later on.
"In my opinion, we have overtaken a large part of the other teams in terms of development over the season -- we staged a good recovery, but there is still a long way to go."
Similar information about McLaren's pull-rod approach for 2013 is now being reported by Autosprint, the authoritative Italian motor racing weekly.
"A few months ago it would have been unthinkable," said the publication's Alberto Antonini.
Antonini also said it is "likely" Ferrari will keep the pull-rod layout for its 2013 car.