I felt like a complete jerk rating some games so low, but in my opinion there were a handful of games that were just head and shoulders above the rest; miners4k for gameplay and ares for gfx. Those were the gold standard.
As long as you voted according to what you believed should be true, I don't see any reason to beat yourself up over it. Being a judge is a hard job, especially when you're sensitive to the fact that all the author's hopes and dreams are contained in those 4096 bytes of data. While it may look a little funny to have 80's in the places where others put 90's, there's nothing that would have really changed by using a higher scoring scale. You would have still scored everything with the same relative distances. Thus the results are good, and I for one am happy with them.
If there's anything I would have liked to have seen, it's a set of "Best in Class" awards. That way, even the best puzzle variations can stand out a head above the rest.