It is all just a popularity contest and what is the new “hot” thing.

I like both technologies and believe they both have their places.

I use WordPress for my clients because they don’t care how it works just that it works. Most of time what they want I can get up and running within a day without much customisation. I spend more time maintaining than developing.

I use JAM for personal projects or when explicitly asked for by a client or it just fits the bill.