I said that you shouldn't give scores by comparing, not that you should give 5 stars to a bad game because X person made it under X circumstances. So, not 5 stars because he explained a sad story about his life and how he did what he could.
If there is a game similar to a AAA, you will rate it 5 stars and everyone else 1 star?
And if you like a game a lot and you give it 5 stars and then you find a much better one, you go back to give it 4 stars because it is worse in comparison?
If someone does solo a really fun game, on theme and with ok graphics he maybe deserves 4-5 in those categories without need to compare first with others to give rate based on that.