Since Gandwarf knows about CC3 then I would say then that its not that they are vectorized thats the issue it would be the lack of anti aliasing. You can get a form of anti aliasing called super sampling if you made the map a lot bigger than you need and then slightly blur it and then cut the size down.

You can read more about this in my tut:
http://www.cartographersguild.com/showthread.php?t=2596

but what I am getting at is that you can stay with CC3 if you do it this way and get readable fonts with it all assuming CC3 allows such a big map.