Obviously this statistic is a very vague indicator of popularity, but it should at least have some semblance of reality. :)
360 for java is about right, but #perl always has well over 500 people and you have it around 10. Perhaps your bot was checking ##perl (which is only populated by a couple lost people) rather than #perl? Many of the other languages you have listed at around 10 people such as python and php have several hundred in their respective channels, also.