Ok, lets try to summarize our discussion so far...

Approximate RCS averages;
F-117 and the F-35; -30dBsm, 4cm diameter metal golf ball
B-2; -35dBsm, 2cm diameter metal ball
F-22; -40dBsm, 1cm diameter metal marble

...but in this case, the corrected quote would be;

The U.S. Air Force, in it’s effort to get money to build more F-22s, has revealed just how “stealthy” the F-22 is. It’s RCS (Radar Cross Section) is the equivalent, for a radar, to a metal marble. The less stealthy (and much cheaper) F-35, is equal to a metal golf ball. The F-35 stealthiness is a bit better on the frontal aspect than the B-2 bomber F-117.
B-2 bomber which, in turn, was twice as good as the even older F-117.