[LarryLied]

Any idea how widespread the Christian faith was at this time? Would the empire had gone Christian eventually?

[JMJ333]

I don't think that the empire would've gone Christian had Maxentius won. He was tyrannical toward the Christians, as was Diocletian. If it wasn't for the Edict of Milan the mass persecutions and deaths would have still occured. There are so many martyrs from that time, one of my favorites being At. Agnes, a 12 year old girl who decided to take death over worshiping a pagan God. She was a tough, heroic, brave little soul! Stuff true Christians are made of!

[Antoninus]

Any idea how widespread the Christian faith was at this time? Would the empire had gone Christian eventually?

Estimates vary, but it's thought that about 15% of the Empire was Christian at this time. More in the Greek east, less in the Latin west.