Cameron: Britain will be unable to influence laws
They will not be bound by them either.
That’s the really important bit.
“They will not be bound by them either.”
Since Cameron framed the issue along the lines of Norway’s relationship with the E.U. then what you say isn’t strictly true.
Norway has access to the European single market but is required to adopt most of the legislation passed in Brussels that deals with the internal market. Critically, Oslo does not have much input into the drafting or passing of those laws even though they have to obey them to continue trading with the E.U.