Well, Joseph, the point of this part of the forum is to 'ask the experts'. After a brief spurt of action at the start of the section being set up, the 'experts' seem to have gone to ground and you're left with us and our NVQs. I would hope that a collection of experience housing professionals would be better than google and a solicitor playing to the crowd, but never mind.
Looking at the case you mentioned, the problem there is that the appeal was brought by the Council against a judge's previous decision based on his dsicretion. The appeal was rejected on the grounds that the judge had acted within the law in applying his discretion and that was as far as the appeal went.
In terms of the case the judge heard, it related to two people who had already succeeded to a three bedroom house. The male defendant was born in that house and was around 50 years old. So, yes, if you have already succeeded, were born in the house and are around 50, it may be reasonable to assume that, were you to go to court to fight a posession order, a judge may rule in your favour.
Law is a very complex thing and I don't think reliance on a superficially vaguely similar case is neceesarily a good idea.