I think it is also important to take into consideration the overall distribution of the ratings. The game that ranked first in this jam has an average just above 4 stars! And the last game in the top 20 is about 3,5 stars in general. That's a bit crazy :)
So 3 stars may not actually mean that the game is bad. Especially when there is only one overall criteria and everyone has their own "rating system". 3 stars might just mean something like "a solid game, but nothing extradionary" for some.
I must say that in this game jam ratings might seem a bit harsh compared to some other jams :) And there are jams where you get only 4 and 5 stars, but that may say almost mothing of the game quality. So I wouldn't rely that much on the ratings (or even reviews), especially when there is so few of them (only 24 for your game!)
As for me, I found "Broken Game" quite nice. It fits the topic, and may not be too original, but well made :) The visual style might not be exactly my thing, and it would be really cool to have more levels (maybe just a couple to create a small, but full experience), but for a 48 game jam this looks really solid.