The most powerful programming language in the world in 2013 - 2014 appears to be Visual Basic 6.0 (~40% from total world source code for programming languages), followed closely by C++ (~30% from total world source code for programming languages). The figure below shows the final result of the analysis:
How the analysis was performed: Step1 - we used Bing and Google search engine for keyword search. We searched the word "source code" for each of the popular programming languages. Step2 - raw results were put into a table (as shown below) and a graph was plotted. NOTE: For C + + and VB, the results of the two search engines are acceptably close. However, when it comes to Java, something is abnormal, one of the two engines is lying. Eventually we traced the average of the two engines in order to reach the truth:
NOTE: The study made the difference between the source code belonging to scripting languages and the source codes belonging to programming languages (because one is interpreted and the other type is not). These results can be easily repeated.