Let's speculate. If Pope Francis were determined to be an anti-Pope, what kind of schism would this create among the college of bishops and rank and file Catholics?
Fr. Z speculated in a comment associated with the video I posted below this post. This is what he
There are those who say that Benedict was pressured to resign, and his resignation was not entirely of his own volition. If that is true, and no one has substantiated it yet, then his resignation might not have been entirely valid. The implications of that are obvious. On another point, if we accept that there was a group that lobbied for the election of a certain cardinal in the conclave, against the laws governing the election of a Pope, then there would be problems with the legitimacy of the vote, since they would have incurred excommunication. The implications of that are obvious. ...but if you have either of those situations verified, they are not that far out there at all. The problem is that they can’t be verified.