BurnIn memory test as good as MemTest86?

[Richard (PassMark)]

If you are only interested in testing memory only, then we recommend using MemTest86. MemTest86 is a better memory test, this is mainly because you avoid the need to boot an operating system (Windows or Linux) prior to running the test. Leaving more RAM available for testing.

[JudMc]

Is the BurnIn memory test as good as MemTest86?