Cucumber (Specflow in .net) vs. Robot Framewrok

In a previous blog I mentioned my finding on KDT (Keyword Driven Testing).

A famous framework is Robot Framework. I could avoid seeing its similarities with Specflow, but a little more complicated to integrate as you will my be introducing another programming language to your project. In Robot Framework you will be programming your keywords and functionalities in Python.

Well, I was not the first having this question. I could find a very nice answer to my questions.
Also a comparison.