Johnny Luken wrote on Thu, May 7, 2015 12:52 PM UTC:
Incorrect.
More accurately; Immobiliser 13 FIDE Pawns, Long Leaper/Advancer 8, Chameleon/Archer 7, Withdrawer 3.5, Swapper 2.5, Cannon Pawn 2.
Certainly the Rococo Withdrawer and Rococo Swappers normalised values fall far below those of the minor FIDE Pieces, the Long Leaper alone benefits from the exotic board giving it comparable strength to the Advancer, while the Rococo Immobiliser, with its added abilities, is unmatched even by the Advancer+Withdrawer compound (the awfully named "Pushme-Pullyu").
The Withdrawer is not resistant to the Immobiliser so I'm not sure why you included that value.
If we're talking hypothetical pieces in a Rococo setting I have already made far more logical and consistent amendments than such ad hoc tacked on rules.