I don't claim to speak for the others, but from my point of view the temptation to try to dampen expectations is always strong. Most people on here understand that, in a football match, the objectively stronger of the two teams sometimes doesn't win and the better of the teams in any given match can also lose. But they expect law to be an exact science when it also isn't and can often go either way (albeit for different reasons).
Issues that look black and white to a layman can often be very much subject to wildly differing interpretations when outstanding legal minds get to grips with them, and this is what I try to convey. I remember Stefan posting on here before the CAS proceedings that, in any litigation, there's a risk of 30% that you'll lose even if you think your case is iron-clad.
Now, when I was a UK government lawyer back in the day, we had a case that we considered pretty much a cert and our QC (as his title then was) put our chances at 80%. That still meant we were a 1-in-5 shot to lose even when we thought we had a slam-dunk. (We did win in the end, by the way.) But the percentages are immaterial. The key point is that, even where your case seems really strong, you never know for sure how it'll go.
I was asked yesterday what would happen where, in effect, the evidence were exactly the same as before the CAS on the substantive point considered in the latter forum and we appealed an adverse decision of the PL panel on the ground that it was so perverse that it must demonstrate a failure of the panel to act in accordance with its statutory duty. My view is that such an argument would be have significant merit.
Unfortunately I can't even begin to try and guarantee that the High Court would agree. That's the difficulty in posting on legal issues here when there's an understandable desire from other posters for certainty that doesn't really exist.