Wow, someone complains that we have TOO MUCH documentation? Hell hath frozen over!
Not to mention that browsing to it might confuse end-users initially because of the duplication. I might be an edge case, but when I view docs, I scroll directly to the methods. Jumping directly to Date breaks that flow. :-\ I now have to pay attention to the icon color and the position of "Date" in the doc tree.
Possibly, or into a guide. Docs are so important and we often overlook complete JS newbies. We have an incredibly exciting secret project coming up to address this better but I think there is value in having the native objects documented in the same place