This is my understanding
The one on the left is the scandi line 5 points to the cutting edge where on a sabre grind knife (the one on the right) line 3 points to the cutting edge. Basically the sabre grind is a really high scandi grind with a microbevil added to the cutting edge. If someone else can explain it better please do to. I am by no means a word smith. Hope that helps.