I have not claimed that the issue occurs to everyone the same way or at all. I merely responded to the other member by stating my own experiences as evidence. And clearly I am not the only one here that has experienced the same issues.
It doesn't matter if I am the only one that has experienced these types of issues from a backup. All it takes is one case for a claim to be made. Therefore, my experiences alone are enough to justify my recommendation and this does not included tens of thousands of posts and threads across the Internet with others having similar issues.
I feel as this has gotten carried away. I simply made a recommendation knowing that a big jump from iOS 6 on a 4S to iOS 8 on a 5S could be problematic and have first hand experienced the problems from a similar upgrade jump. I was then told my recommendation was nonsense even though there is truth behind it.