I can not comment on Pope John's personal holiness, but "heroic virtue"? Fidelity to the magisterium {see PACEM IN TERRIS}? VII Church is not canonizing the post conciliar popes as much as it is trying to canonize the council. Think about it, only one pope since Pius V {d. 1572}raised to the alters until the great Pius X {d.1914}, and now--suddenly--every eligible {i.e dead} pope since John XXIII has been canonized or is on his way. Coincidence? I think not.