I've been using Fusion for years, and have several releases with it. I switched to Construct a few years ago, mainly for Wii U, and converted and released a few of my older Fusion games for the console. I'm still jumping between Construct and Fusion, and can't really decide on which to use. Fusion is superior when it comes to mobile, but they still don't have mac and linux export options. I actually like Fusions event editor, I use these kinds of editors because I don't wanna program, and the less the event sheet reminds me of code, the better. As such, the visual layout of Fusion is very appealing. On the other hand Cosntruct does things like rezising the screen and objects way easier, and the list can go on.
I doubt either Fusion of Construct will get it "everything right", you're always gonna have to make a choice between which features you favor. Personally, when both Fusion 3 and C2 is out, I'm gonna go with the one that supports the most platforms (i.e consoles).