I thought that "Roboticus Maximus" was the better the better of the 2 shorts. It was fun seeing some of the shows' less used villains team up against Yin & Yang. "Size Matters", I didn't like as much. Admittedly, I'm not a huge fan of Yang/Lina, and I don't like it when the shows' writers go out of their way to make Yang look like a dufus. Plus, we barely saw Yin in this short. However, it's Yang who delivers the best line in the entire episode:
Yang: (to Lina): This well is more shallow than I thought, but then, so are you!