No shortened antenna can beat a full 1/4 wave length antenna of good
design. I have shown this in my tests. The X-Terminator can be beat by
a 1/4 wave length antenna, but with the same tests the X-Terminator
can beat the RS 102" ss whip.


Then how or why is the RS 102" whip a 'bad' design?

It's secondary and arguable as to why it does what it does. All one
really has to know is what it does.