Are Inquisition and Crusading the only ways of converting people? I think you know they are not.
If he does not believe in converting people to the faith he can not be a Christian believer. Do you think Europe and western culture can be preserved over the next few hundred years without actual Christians standing up to Islam?
Perhaps the Pope believes in a soft sell. That the way to convert Muslims, Jews, Budhists, etc. is to reach out to them, respect their faiths, gain their trust, and then inform them about Christ by word and deed. That non-Catholics, upon seeing the Pope's positive example, will then voluntarily ask to learn more.