Well, this hornet definitely has an RCS less than 0.1m2...
http://www.flickr.com/photos/nuclearlakeside/1175796840/
Seriously, we all know how figures for RCS comes about...Just think, who in the public domain has the ability to measure RCS? Who in the defense industry is allowed to talk about RCS?
Its not like one can construct one of these in their backyard...
http://www.thehowlandcompany.com/RCS-Hughes.htm
On the other hand, we have bill sweetman and his articles quoting "industry sources" about how RCS of the SH is reduced by xx db...
http://aviationweek.typepad.com/ares/2007/05/eads_knows_lo.html
He of course was the guy who quoted the "marble-sized" RCS for the JSF/F22.
What is definite is that the SH uses RCS reducing techniques more advanced than those of the earlier hornets.