I think that type of information can be interesting if it's done for a couple of big games per season, like the B3 Final and World Cup Final. But when it's used it should be publically and in a consistent way, it shouldn't be provided on an ad-hoc basis.
It is just a fun tool that mainly focuses on showing the randomness of the GE, there's not much to learn from it, besides learning how "lucky" you got this time, it means nothing for the next time.
I think you can learn something from it.
For example this post
(313659.10) regarding this game
(119334645). Without BB-Justin's post a lot of managers would go away thinking that team were unlucky, when actually it seems the losing team might have been the weaker team after all. The same happens if win-rates and PD are provided, information is revealed. That's not always a bad thing of course, from what I've seen of Justin's forum posts he tends to find a careful balance. But if this tool is being used on request (I couldn't tell from OP if this is a one-off situation) then it is giving information to specific managers.