This is a very tough subject to answer correctly. That site does a terrible job on answering which is the best 2D engine because "best 2D engine" has a ton of different angles to evaluate.
In terms of speed and performance, LibGDX is ridiculously fast. Have a read on this post:
http://www.badlogicgames.com/forum/view ... 11&t=13805
There are other examples to be found with benchmarks that show it is absolutely wonderful.
On the other hand, managing memory with libgdx can be tedious and sometimes frustrating, and the fact that the engine uses 0,0 xy coordinates at the bottom left instead of the top left can really cause a lot of confusion! Especially when dealing with custom cameras etc.
Construct 2 has a lot of the boring already pre-made, but is also extremely powerful. The event system while an acquired taste -- really is very powerful. I have some event sheets in my game that span longer than certain classes I have done with libgdx for my games. The developers for C2 really are special. Ashley is a very unique and talented individual with a bright bright future. I have a ton of faith with Scirra.
Clickteam fusion? I mean really? It is so outdated and not even in the same league anymore. I do not know why that is even on the list.
LOVE is awesome in it's own right. Really a solid engine.
Gamemaker... this horse has been beaten to death on the forums.
I personally enjoyed using Monogame, except for the content pipeline. It was awkward. Also GODOT is really really cool, and complicated.
Game Develop recently went open source, so we will see where that leads. I am glad that I have supported Scirra and absolutely love working with C2.