No problem.
My point regarding Saudia DEC failure rate is not subjective, but highlighting the fact that if you're hired as a direct entry Captain, the failure rate is not necessarily a product of how tough it is (although I'm sure it is), it is also affected by the fact that DEC trainees may be operating in a very different style to what they were used to. As opposed to the BA/CX/QF etc command trainees who have been with the company for many years as FOs.
So, it is not a fair comparison. A fair comparison would be to assess the course length and failure rate for Saudia FOs upgrading to Captain.
The CX system is not very similar to that used by BA. Perhaps it once was, but from friends at BA, it doesn't sound much like the CX system at all. CX is along the same lines as SQ, but not quite as long. Many checks along the way.