Usually the official JVM has access to newer and better versions of the garbage collectors more quickly as well as debugging tools. For example, the JDK 8 from

Usually the official JVM has access to newer and better versions of the garbage collectors more quickly as well as debugging tools. For example, the JDK 8 from oracle had the java flight recorder, a fantastic bit of tooling for debugging prod. I don't think the non-oracle versions got it until 10 or 12.