To be fair, I think this notion is open to debate. I’ve seen some other reviews of different girls where someone suggests a girl is stunning and I can’t quite see it. All about opinion I guess 
At least in this case we can easily find out what Mandy looks like and make up our own minds! The problem is when there are no facial pics available and it becomes apparent (usually too late) that one man’s “stunning” is another man’s “munter”, as the “prettiest girls on AW” thread proves.
Having met Mandy a couple of times I think she’s very pretty indeed, although not IMHO “stunning” but it’s obviously down to individual preference.