May come down mostly to Java being able to use 32-bit references on a 64-bit JVM in certain cases. Many of those programs are very heavy on references. C# can g

May come down mostly to Java being able to use 32-bit references on a 64-bit JVM in certain cases. Many of those programs are very heavy on references. C# can gain a bit in some cases due to value types, but it doesn't always help enough.