Its not an opinion, Mike made this chart with the choice of segregating the species by altitude elevation, not by temperature preferences. To change the placing of ramispina, faizaliana and tenuis for reasons other than altitude ranges would make no sense. Notice how Wistuba splits everything between highlanders and lowlanders: he doesn't have a section for intermediates. His method of segregation is based more on cultivation preferences than elevation so it will obviously have differences from Mike's list. To reiterate, neither classification wrong, just different, but it doesn't make sense to have ramispina, faizaliana and tenuis as exceptions on Mike's list since their elevation ranges are considered intermediate.
Also, most people grow N. tenuis as highlanders but people have had just as much success growing it as a lowlander and intermediate. So according to your logic it could just as well be considered a lowlander.
PS: I think plant#1 was talking to Mike.