Ketamine does not even come within eyesight of it, ketamine is like the trippy elements of PCP with NONE of the actual ENJOYABLE elements of PCP like the godly egocentricity and invincibility that makes you feel like your a superhero.
It's a matter of opinion really, some people like the stimulating ego-centric dissociatives, others prefer the smooth sedative ones like Ketamine. Others like both equally.
But anyway the part of your message I highlighted is why sometimes people on PCP *actually* do some of the things we've all heard horror stories about. We all know stimulants can make people more aggressive or prone to crazy and dangerous behaviour (both towards themselves and others) - now combine that with the fact you can't really feel any pain and someone could slice your arm off and you'd still be swinging at them and you'll see why PCP seems like a horror drug when people see the rare incidents that do happen with it.
Ketamine has a bad reputation in the UK somewhat but that reputation revolves around the fact that when people do too much they roll about on the floor like a severely brain-damaged fish out of water and while they may be having a great time themselves (Hell yea! :D) to everyone else it looks pretty appalling - and when people do it in public places, people get wary of the drug. It doesn't have the whole horror reputation of PCP simply for the fact that when you take too much Ketamine you can't tell left from right or stand up nevermind get in a fight with someone - good luck trying.
It's certainly not remotely common that these things happen and it's not a reason to be scared to take PCP (unless of course you have existing problems with your psyche, then I'd shy away from any dissociatives for sure) but such incidents have occurred and been blown up in the media and as such it has a bad name.
Psychedelics have their bad reputation to many too, I feel it's just that due to them being more common they aren't quite so feared as when it comes to PCP for some. You've heard the stories about people jumping out of windows and the like during the trip, and these things have happened - despite being extremely rare, they happen on near enough any drug known to man and when sober too - people do silly things! All about being careful and making sure you stay safe, and approach them with a clear head.
It's happened with a lot of other drugs too, for example in the UK there's a case of reefer madness in the newspapers and as such I've met many a non-drug user (and even some drug users) who think Cannabis is a guaranteed one-step route to schizophrenia and butchering and eating your 90 year old grandmother. 8)