is this a rumour?

I was watching one of these F5 tip videos from an ACCA professor in Asia, and I found this interesting fact he stated. He says “that topic E of the syllabus is the heart of the syllabus: performance measurement is the most important topic (the heart of the syllabus),but what surprises me is this:, he says “that even if you get super excellent marks in the other four sections of the syllabus but are weak at section E, then the examiner will deliberately fail you because you are weak at performance measurement. Is this true? It’s hard to believe. I mean the pass mark is 50% and whichever combination you get that 50%, you have passed. I mean if you get let’s say 80% in the four sections combined, and have lost all 20% in section E (just a hypothesis) then how possibly can the examiner deny you the pass mark. You have crossed it with a great amount. He says ” that the old examiner – Bob Cowell, has stated that if you are weak at performance measurement, then, although you are great at other topics, you will deliberately be failed. I don’t think it’s reasonable or even logical or even fair on the side of ACCA to do this.

Please confirm.