TacticalTeacher - In all honesty, I couldn't tell you if the cable could knock out a round for the barrel. I'm, all in all, a very new shooter. I haven't been at it a full 6 years yet and a bullet stuck in the lands is not something I've yet experienced. I would venture that the cable "might" be able to knock something that was loosely stuck in the barrel. The cables are rubber jacketed stainless steel. I'm thinking the cabling is a 7 strand twist. It has a little rigidity to it. But you'd never get as much force out of it as a rod.
I also am by NO means claiming to be an expert for the record. I just own an Otis kit, and have been very, very happy with it.
I as well have an issued steel joined rod C7 cleaning kit, so I suppose if it every really came down to my needing jointed steel rods, I do have them. I've definitely used that kit to great effect many times, considering being in, one tends to clean more service rifles than one shoots, LOL.
I'd say the two advantages to the Otis system are that it is very conveniently portable, and for cleaning from breach to muzzle. With my 10/22, for intermediate cleanings where I don't feel like disassembling my receiver, I can hold the bolt open, and fit the cable through the chamber out the muzzle. There's no way a steel rod set could accomplish that. I have a stock 10/22, and haven't drilled the whole in the back end of the receiver that would allow me to feed connected steel rods through it. I don't know if I'm brave enough to drill my own firearm just yet. But for me it's moot, as I can turn the corner so to speak with the cable. I also haven't yet been brave enough to remove the barrel from the receiver either.
I'd never bash a rod set. There are advantages and disadvantages to both systems for sure. I think the overall versatility of the Otis system is a bit greater in the end, but neither cables nor rods can each do everything.
I've got my rod kit stored in my Otis pouch.