Test of plagiarism
You get a high score because you managed to create a flash that moves and feels exactly like Super Mario Bros Z. You get 2 marks taken off because it feels like plagiarism:/
Yes you got all the flash effects, sound effects and sprites, but use them to create your own original piece of work not copy or inspiration from Alvin.
Just like some other guy that made his own flash, his flash looks exactly like SMBZ: Same sprites, background, effects, sound and music (except for 2 other music used). In the end he noted we shouldn't compare it with SMBZ:/
You have all the sprites and stuff, make your own original work, take it to a whole new level. People have already seen SMBZ episodes and they love that sh* so much. (I myself love episode 6!). If you complete this flash, people won't care because it looks like duplicate. I have seen other Sonic flash movies, the most innovative one I have seen so far is Sonic RPG. I haven't seen it because it doesn't interest me
Perhaps if you can make something new, like Sonic Battle style flash or something, you'll be hailed!