It's all anecdotes, but in my experience native devs are by far more willing to step outside of their area of expertise and use the right tool for the job when building for the web. Yeah they'll groan, but at the end of the day they realize that HTML+CSS+JS is how web front end works and so they write that. Very few bother compiling their favored language to JS or asm.js or whatever because it adds an unnecessary step/level of indirection and feels like trying to use a hammer as a handsaw.

By comparison web front end devs tend to cling much more tightly to their favored language+toolchain, taking it with them to every platform they decide to develop for.