If you're testing your game on a device with average capabilities and it's smooth, then you'll be fine, yes. :)
Corona is the only engine I currently use. I tried a few other engines before, but since I consider myself a beginner game developer I stick to simple games. You know, the K.I.S.S. rule. Defold looks promising, but I found Corona first, and it was perfect for a simple game like WOTA. You can iterate really fast on ideas in Corona, and it's easy to learn. At first I was missing a graphical editor like Defold or Unity has, but it wasn't really a problem for this project.