Exactly. While the article is good about events history, it doesn't go deep enough into the feature evolution (which is tightly connected to and reflects the evolution of the software development). Which is :
TeamWare - somewhat easy branching (by copying whole workspace from the parent and the bringover/putback of the changes, good merge tool), the history is local, partial commits.
BitKeeper added distributed mode, changesets.
Git added very easy branching, stash, etc.
Any other currently available source control usually is missing at least one of those features. Very illustrative is the case of Mercurial which emerged at about the same time responding to the same need for the modern source control at the time, yet was missing partial commits for example and had much cumbersome branching (like no local history or something like this - i looked at it last more than a decade ago) - that really allowed it to be used only in very strict/stuffy settings, for everybody else it was a non starter.
TeamWare - somewhat easy branching (by copying whole workspace from the parent and the bringover/putback of the changes, good merge tool), the history is local, partial commits.
BitKeeper added distributed mode, changesets.
Git added very easy branching, stash, etc.
Any other currently available source control usually is missing at least one of those features. Very illustrative is the case of Mercurial which emerged at about the same time responding to the same need for the modern source control at the time, yet was missing partial commits for example and had much cumbersome branching (like no local history or something like this - i looked at it last more than a decade ago) - that really allowed it to be used only in very strict/stuffy settings, for everybody else it was a non starter.