Mmmm... well, although i haven't been a lot of time with Ace2 or any addon, I must say that Cartographer is a great Addon, and a nice code.
The version that is still mantained by ckknight, is great. Works perfectly for me.
And the purely (purely?) Ace2 based new fork version, well I haven't tested it yet, but I suppose that makes its work as well as Rock Cartographer.
I think, however, that if ckknight is the creator of the code, and Carto1 uses his code, credit should be given to him, clearly enough to know that he is the one that started Cartogrpher. And, when code gets different enough, Carto1 programmers could get the credit for the code fully.
BUT... if Rock libraries are based on Ace libraries, and other Ace addons use those libraries, as well as other Ace based libraries, and are still considered Ace based, not "other libraries Based"... Why is ckknight's Cartographer not considered totally Ace based addon?