I would like to see some benchmarks on that. I like the V8 engine, it is also a marvelous engineering feet, but it is simply not made for the workloads that the JVM can routinely handle, like heap size up to terabytes. It’s not an accident that serious server applications usually run on top of the JVM.

Also, a JIT compiler written in Java running on top the JVM interpreting (though in a clever way) javascript can match the speed of V8, just saying. Look up TruffleJS!