Construct 2 was first released 9 years ago, in February 2011. Back then, Flash was still a dominant technology on the web; Microsoft's latest browser was Intern...
As a C2 user who've moved to C3, I can say about 80% of the functionality is now available through new plugins, along with a whole bunch of new features that come with the engine, and newer plugins being developed by the people in the discord community makes C3 a much more feature rich engine.