There's equal parts people in this thread alone admitting it's godmode and arguing there's weaknesses.
You're right that I can't be bothered to 'prep properly' to beat them solo. Because it requires nearly quadruple the time in my play sessions to prep as it does for them to get inducted. Nevermind that these preps aren't always available, or especially at mid-level, have grievous disadvantages that can get you killed if things go awry whether your opponent is a rager or not.
I could go play it, and I might even do it sometime this year when I'm done laughing at the people who, when they come to the same conclusions I did, continue to treat Ragers worse than Imperials were for many, many years after their resurrection (and during the period of time you could donate gear which encouraged full looting). Classy ragers don't prevent this.
Playing one won't change my opinion. I've decided that much.
CF's highs are high. The lows are damn low. Crash anyone low enough no matter how many imm rewards, and they'll walk away and make your experience easier and more pleasant. Avoid having it happen to you without cheating and you can accomplish just about anything in this game.