If you found a Catholic in service and exhaustively showed him from the Bible all the things that were wrong with the Catholic church, only to have him say "I'm just going to have to wait on Jesus to fix things" what do you day to that?
Are you serious? Does the fact that a Catholic is willing to overlook the faults in his own religion make it right for a Jehovah's Witness to ignore the faults in his own religion?
"The other guy does it too" has never been an excuse, even less so in this case, as the Watchtower has criticised the Catholic church more than any other religion, acting as if they are so much better, the only true and good religion.