Yes! I was just going to say the same thing. Please mod this man up, I don't have points!
On the other hand, perl is a "mature" language it's likely that many modules already exist and are in widespread use, thus pace of new development is slowing down. Ruby is on the up ramp of its life cycle, and consequently a lot of stuff has to be developed for it. Revisit in five years and I'd guess both repositories will have about the same number of modules.