[Dewie]

They used Java as the static language, which is relatively cumbersome as far as statically typed languages go, and is also known for its verbosity. "Rapid prototyping" and "java" does not really mesh to begin with, or at least that's what the common wisdom tends to say.

It seems that they need another survey/study to check the OPs claim (namely do some research on productivity in languages with stronger static type systems than java).