Actually, you want to know the connection between the game engine and possibility, does have connections with success and choice of game-making platform?
I am a beginner too, and when I looked at other platforms I had the same question.. But if you check options, probably all options are covered and if you need some specific action that is not covered, you have your own javascript code, to make yourself or outsource this small part of code.
For success for some game- idea and creativity is most important, but I think that for example Unity using small productions or indie with bigger budgets, or start-up business people who invest, they will choose Unity developer first. It means more money- more success. More credibility more invest. Now Construct have and custom scripts and I think in the future platform not will be marked for beginners or only for visual programming for beginners and it will produce more famous games.