So you are saying throughout his career, SAF's correct assessment of players = his failed assessment of players. Which means his opinion on any players performance automatically nullifies each other!
But joke aside, lets see, you have not given apple to apple comparison. SAF was talking about future potential of Jones, which one can understand has higher probability to go either way. Whereas his praise about Raul was when Raul was already an established player. He wasn't talking about how Raul would be, but how he was at that point in time, i.e. his prime.
Potential assessment of a prospect is not same as praising an established world class player.
Anyway, it is difficult to argue between fanboys. I have seen playing both week in week out and I know prime Raul was level up than prime Villa. You have your own opinion. Agree to disagree and move on.