[kaba0]

I wouldn’t call it performance, but control. The Java and .NET world focus on different things - the JVM has a very very advanced JIT compiler and due to the programmer not being able to specify all that much about certain aspects of code it has a better chance of optimizing it (similarly to how SQL queries can be made very fast precisely because they are at a high level of abstraction). The CLR provides more control at the expense of less optimization opportunity. This escape hatch is really useful for some programs, but not all of them would benefit from it.