http://members.tripod.com/~dabz_2/updates/critics/critics.htm
Sorry, but I haven't learned linking yet. You'll have to copy/paste.
a) slanderous comments, some by devout athiests and some by Christians of various denominations, against the character and nature of the RCC and the Pope (ie "they have every reason to lie"), and
b) positive assumptions and character references about Rivera and Jack Chick (ie "they have no reason to lie").
In other words, the "defense" relies almost exclusively on the same tactics the RCC is accused of using, namely character assassination.