Yes, each installer contains the needed VC++ runtimes installers, that are launched by the installer automatically. If you download any of our installers again now, you don't need to separately download the newest VC++ runtimes.
However, you might have installed other products that requires a different version, that's why you had multiple versions and yes, if you still need to use the program that required that specific version, you need all of them installed. Those are WinSxS libraries so, it's possible to have multiple versions installed at the same time without causing any problems.
