Well, I noticed that CentOS/RHEL distro's have quite old versions of everything, but Debian stable doesn't seem all that cutting edge either. I find myself reaching out to backports and even sid to get what I need at times.
At my new job, we recently had that debate -- and I was quickly overruled for recommending CentOS/RHEL. My employer is a Java shop, I can almost always find rpm and deb pkg's for most stuff we need.
RHEL works by backporting bug fixes and new features into the old versions. Don't go by the version numbers, check the availability of features instead.
And neither is Debian (stable). But given that they're often used for the same purpose (servers), it's not that irrational to compare them. Having a larger, supported package selection (even if it's a bit old) may be a good thing, and relevant when you choose your distro.
For the record: I have no idea how the package selection compares between CentOS and Debian - I've been firmly in the Debian camp since forever, and stay there mostly for other reasons, of which laziness is the most important one.
At my new job, we recently had that debate -- and I was quickly overruled for recommending CentOS/RHEL. My employer is a Java shop, I can almost always find rpm and deb pkg's for most stuff we need.