You're talking about apples and oranges, so let's sit down and eat some fruit and I'll be happy to clear that up for you.

But let me get the entire quote, might make more sense then:
It's a cumulative effect. I wouldn't suggest trying to catch up to prowler; he's WAY ahead of you.
CC has a punishment "ladder", where you're given warnings and then proceed onto bans if those warnings aren't heeded. So the more you keep misbehaving, the longer and longer each ban becomes, hence my "cumulative effect" comment. For your example, chaos and prowler both had the same offense, but prowler had already 'worked his way up' to a one week ban with prior infractions. OTOH, this was the first warning ever for chaos. So same "offense" warranted different punishment based on the prior history of both members. While on the outside this may appear inconsistent because prowler's punishment was "harsher", if you look at the overall picture, you'll see we follow a consistent format when it comes to bans here. And when someone gets up to the longer length bans, admins are always consulted, which happened in prowler's case. The typical* ladder is warnings, 24 hr ban, 3 day ban, 1 week ban, then we start discussing permaban.
If anything is still unclear, please advise.
*p.s... I say typical because some infractions are so severe (i.e. blatant trolling), that admins will accelerate the punishment process, but that's an admin call, not a mod one. Also, if someone has behaved for a long period of time after initial infractions, they'll be "stepped down" and won't start where they left off years ago.