Did the serpent have more knowledge than man?

The Council on Biblical Manhood and Womanhood has published a book called Recovering Biblical Manhood and Womanhood and on page 73, John Piper and Wayne Grudem write that Adam was ordained as the one responsible for the life of the garden. The reference is in response to a quote from 1 Timothy 2:14 where Adam is said to have not been deceived. Some take this as a proof that women are more gullible than men and easier to deceive, but Grudem and Piper say that this is not so. Instead, CBMW brings a new meaning to “not deceived”. They say “not deceived” means that Adam was not approached by the deceiver. They write:
If this is the proper understanding, then what Paul meant in 1 Timothy 2:14 was this: “Adam was not deceived (that is, Adam was not approached by the deceiver and did not carry on direct dealings with the deceiver), but the woman was deceived and became a transgressor (that is, she was the one who took up dealings with the deceiver and was led through her direct interaction with him into deception and transgression).”
Since when does “not deceived” mean that you must have a direct interaction with the deceiver? …