I still don't understand how Microsoft was able to provide a better debugging and tooling experience for Android, than Google itself for their own OS, although Android Studio 2.2 finally seems to be usable.
Visual Studio was first released in 1997, the company has 20 years experience in designing and building tooling. I believe they also have a very firm dogfooding policy, and some very intelligent people work there.
Google changed the search engine landscape and created the only competitor to the iPhone, but building tools and tooling is definitely not a key strength.
There are some incredibly annoying basic missing features in Chrome dev tools. Like you still can't just hover over a variable, you inexplicably need to highlight it. Functionality that IE dev toolbar had 10 years ago. And don't even get me started on their shitty black boxing solution, something that should be as easy as right clicking on the file you want to black box, but no, time for some bloody regex foo.
It's better than Firefox + IE, by it's not better than proper IDEs by a long shot. And it's got "designed by a programmer" written all over it, the UX is awful.
VS has the 'immediate window' which allows you to execute (almost) any statement within the context of the local scope, including intellisense and autocomplete.