I think what you're saying is that if historically, a certain WR led to success 100% of the time, there is no way that WR could have been successful any more times. I get that, but to use the language you used, and "call BS on it" is a bit harsh, in my opinion. As daylatedollarshort is saying, if someone has 80K income, but only spends 40K, saying that they have a 200% success rate is merely a way of expressing that. We understand what they are saying, and that's what matters, surely?
This forum has long been characterized by civil discourse, and I for one prefer the spirit of understanding my fellow forum members, than "calling BS on them" - unless they are purposely peddling untruths, in which case it is warranted. Such scoundrels deserve to be sent packing
A little understanding goes a long way.