Agree with this - having used Godot and Xenko both are good but with a significant gap between then and Unity/Unreal both can be used to build games/apps and make a living with.
Godot is more polished and excels for 2D and 3D is quickly evolving. Godot also has a great community. Xenko is better for high end graphics and large complex scenes - especially if pushing the edge in VR etc. Since going open source its evolving slowly but steadily. While It is missing some features compared to Unity and Godot it has an incredibly capable foundation and its very easy to build on. The Community is very small but active and it has a lot of promise.
Isn't Xenko done 100% in C#? There is a mentality in gamedev circles, that only C/C++, and maybe Rust are viable for a game engine. Unity supposedly avoids it by the fact that while gameplay code is C#, the engine underneath is still C++. How's Xenko on the performance side?
Yup its C# and then calling through to respective APIS for Directx 11/12/Vulcan etc and via xamarin for mobile. Coming from a C/C++ engine developer background I was very pleasantly suprised how performant Xenko is. It easily gives Unity a run for its money, C#7 is a nice scripting environment and the renderer is a thing of beauty both architecturally and in terms of output.