Welcome to my 100% fool proof grading criteria!
(yes it stinks but on this site I do what I want :V)
10 - SMB 3 Tier
9 - Fantastic/Near Flawless
8 - Great
7 - Good
6 - Nothing Special but Functional
5 - Okay
4 - Bad, but maybe some redeeming factors
3 - Ironically enjoyable?
2 - Awful
1 - Unplayable
It should also be noted that when revewing games I only play them on real hardware even though the screenshots on the site are from emulators.