Whatever the case, there is no wisdom in Christians (especially the supposed earthly head of the Christian church) bowing their heads and kissing the sacred texts of different religions. There is literally no excuse for this conduct, as such communicates endorsement. Christ made an exclusive truth claim (John 14:6). If other belief systems are acceptable or valid to God, then He must be a liar. But that charge would be blasphemous to the utmost.
In light of all this, apologists for the Church of Rome have came up with all sorts of could be explanations and appeal to the ex cathedra qualification. But embarrassing questions remain regarding the issue of the pope kissing the Koran. If he is truly the Vicar of Christ, then why would he display so much reverence for a religion that fundamentally contradicts his own? His action so clearly resembles that of an apostate (Galatians 1:8-9; 2 John 9-11). Why do Roman Catholics work so diligently to defend this sort of behavior? The rightful thing to do would have been to just admit that the pope was in the wrong. Moreover it is not as though we will ever see an imam kissing the Holy Bible.
It seems that the pope these days will do anything to gain political power. That appears to be the motivating factor behind the Vatican associating with Islam. The Roman Bishop definitely seems to be a figure who has charisma. Even today, millions flock to Rome just to behold him. Faithful Roman Catholics bow before him and kiss the hand which wields the ring molded for his coronation. All of this is idolatry, plainly and simply.