What does the created date for the MFT mean?
Every file and folder on an NTFS formatted hard drive has an entry in the MFT, including the MFT itself. Because of this the MFT has created, modified, last written, and entry modified dates associated with it.
These dates indicate the date of creation of the MFT, and therfore the date the drive was formatted.
All of the dates (created, modified, last written, and entry modified) are the same and do not change during the life of the MFT (assuming normal use of the hard drive).