knowing both i used to be frustrated by jsx's lack of support for plain if and for loops like razor has (eg map and the weird && syntax we general end up with)
eg ``` <ul> @foreach(var item in list) { <li>@item.name</li> } </ul> ```
of course this idea goes against jsx's implementation (as it's just nested functions) and paradigm of being html in plain javascript rather than an interpreted templating language.
some of the differences i really like (like being able to assign compoents to variables, pretty sure razor doesn't have anything like that).