Well 7 page of this topic named "Construct 3 any news?", "What we do is discuss and compare engines because that is what this topic is about" is actually off topic.
People asked infos about C3, infos were released.
Why compare with other engines ?...
This topic name is different but I think this topic is a great opportunity for Scirra to learn from other competitive Game Making Engines since Construct 3 is still under production. By looking at how this conversation is going to, I say that the purpose of this topic is to encourage Construct 3 to be made better than the other engines.
Btw. When you look at Spark, we can already tell that it will not go well at start. Surely, there will be a lot of bugs in the interface, browser editor and especially mobile editor and the game compiler. Think about it, Construct Classic + Construct 2 ran for 8 years and still have no compiler and still has some unexplained bugs. What more for an early and very sophisticated game engine? Not to mention a native compiler made by a small team that even the large company Intel is still having trouble making a html compiler that will solve the game developers needs, wants and demands. Once the game engine is released, then you'll see the bug reports.