program selection system

We’ve organized a coding contest last year (July 2007) in Linz, Austria (see http://www.catalysts.cc/index.php?id=contest) which targeted the following questions:
* Who is faster? Who is more efficient? Who is more effective? Who is more productive?
* Does “Pair Programming” really make you faster?
* Does “Test-Driven Development” really lead to fewer bugs?
* How many ways are there to solve a problem?
* Is it right that good developers only write 30 lines of code for which mediocre developers need to write 300 lines?