Re your second sentence, I think it's unfair to attack the author in this way. By my reading, the author didn't attempt took describe the discrepancy and just

Re your second sentence, I think it's unfair to attack the author in this way. By my reading, the author didn't attempt took describe the discrepancy and just included the abstract of a paper that does. We should thank the author for their best effort. This touches me because I've often been in the situation where my explanation was inadequate, and I was accused of trying to sound smart. We shouldn't be too eager to take people down a notch.