How do you figure? Especially if you beat down the colonizers and take the CNs yourself prior, the only difference is that the tag in question is that awful "Holy Roman Empire" grey spew all over the map. But you can definitely make it the only non-CN tag in existence. Why wouldn't that count?
To gives some perspective, in 1.11 as Tarascan during co-op LP I was manually assaulting provinces in China just after 1600. By late game, however, I could pull an occupation rate of roughly province/month in assaults alone even on high level forts. For low-tier stuff in Russia for example it was actually faster to assault a 1.11 fort than it is to occupy a non-fort province in 1.13

. Rather than a ~25-30 day siege phase occupation you'd get a 1-4 day assault and move on.
I'm not convinced early wars are much faster on average either. Stack wipe --> carpet ended most wars inside 5 years if you were strong. Between alliances screwing with "length of war" and needing you to go get that ally out of the war or wait in practice 1.13 isn't much faster best I can tell. In situations where an opposing fort actually blocks you, you can't get wipes and it winds up being slower. If it weren't for length of war nonsense (that really needs an overhaul and a competent replacement modifier) 1.13 would probably be a bit faster early on.