These are decent for what they are. Nothing really perfect, but they're not terrible either. Though if I were to nitpick, I think the last one dragged on for very long. Sometimes to make something funny, it needs to be quick and to the point. Also on the 2nd one, I'm not really sure what happened. Did Sonic jump up and fell down? It wasn't conveyed very well. No offense, but I can see why these got rejected. You had funny ideas, they just weren't executed well. Just keep working on these, and I'm sure Sonic Paradox will accept your content. Good luck!