I'm still not convinced that your Socialist Insecurity Equity Funds are a good idea, no. Your attempts to limit the discussion to rates of return haven't fooled me into overlooking the horrible corruption that will result from letting the government control equity funds.
See:
http://weblog.secureourfuture.org/mt-tb.cgi/199
SS Equity Funds EQUAL Big Government Corruption!
S4 Sucks and Gives Change!