From what I can tell your code is converted to JAVA, so you'd be comparing JAVA to JAVA. There might be some overhead for the framework to allow your BASIC code to operate how you expect, but I notice no speed differences compared to other apps on my device.
The IDE is much nicer and smooth too (I think I heard him say it was wrote in .NET which compared to other .NET apps it is very fast). Eclipse as an IDE is horrible, bloated, and slow. Other tools built off of it are bloated and slow too. I love Jetbrains tools for .NET, and when they announced PHP Storm I was excited until I downloaded the 100MB+ bloated piece of garbage. Ended up going with PHP Designer and was considering WeBuilder, but didn't like their license model and constant sales. Most editors and tools I use and like tend to be wrote in Delphi or .NET. JAVA is supposed to be light and compact, but they ruin it by making a monster like that and expecting developers to use it to program.