I think that's an oversimplification. I'd say, from my personal understanding, that given the sanctifying grace available in the Sacraments, its potentially easier for Catholics to enter eternal life than for Protestants. But the Catholic Church doesn't deny that Protestants do go to Heaven.
There is considerable dispute over the doctrine of "saints" of course.
Some non-Christian religions that also derive from Messianic appearances think their "saints" become gods.