We must have had the same link...I went to get you the URL from the one I use and it was gone. :(
Pretty much the high-highs are all the messages that include either *'d words or CAP words. The only exceptions that I can remember are speed (the low-high message has caps, the high-high message has the asterisks), defense (low-high talks of "major improvement," high-high talks of "massive improvement") and LP (high-high says "sky's the limit"). I can't think of any others that didn't fall into the above pattern.