I was in the Marine Corps for 5 years from 1998-2003. 3/5, 31st MEU (SOC) 1/4, and MWSS 371.
MFR is now MSOB, under MARSOC.
MFR was deactivated and rolled into MARSOC sometime in 2010, in 2008 the BN levels were reduced to 2 or 3 Companies. and the Reserve unit was decon'd.
MARSOC now runs the show and the MFR companies are nothing more then MEF asset. Along the lines as an FO company.
I'm glad you were able to pull up a wiki page. Next time try to read the whole thing as well as make sure its up to date.
The real difference is nothing more then apples and oranges. Mission and Taskings are different for each. The old "my Navy Seal can kick your Green Berets ass" argument is stupid. All of SOCOM is precision tools for each groups task. SOCOM/JSOC and the commands under that umbrella are all incredible at what they do.
With that Red Devil, thank you for your service I'm assuiming the 82nd AB icon is your FWTSI.