What are the similarities and differences? I tried http://forum.wordreference.com/showthread.php?t=2474929&langid=6 but am contending against the differing opinions.
It sounds wrong without the 'of' unfortunately.
From my BE perspective, two distinct meanings, exactly as KellyB says: Much of the same - most of the things referred to are identical. Much the same = similar.
An example from p 23, Thinking like a Lawyer, Frederick Schauer:
These seventy-one cases were almost all ones in which there was no clear legal answer, and taking these seventy-one as representative of how law works or how rules work would be a major blunder. Very much the same dynamic applies to the cases selected for law school casebooks.