For our own organization of thought, it is high time we are clear about what we want to know.
Technical syllabus is one thing, I don't believe FMA have anything "over" Aikido in this area.
Training methodologies are another thing. This would involve sparring, resistance drills etc. Some FMA have a major advantage here over most Aikido. The dog brothers are a good example of this.
Experience is another thing. People who have been in real life and death knife fights. This kind of experience is fleeting. First there are few people who have been in a life and death struggle over a knife. Second, most people who have didn't gather that much information from the exchange. That is to say, the one or two encounters didn't give them huge amounts of (non-personal) information over people who haven't been in a knife fight.
When training with an experienced person, it's important to remember they can only give you some insights, they cannot give you their experience. This can be seen time and again in sport martial arts. The best competitors don't necessarily make good teachers, and will often have a stable of students who are not great competitors.
Knife fighting is extremely dangerous, so very few would choose, or have the opportunity to be in many life and death exchanges. With the few that have, there is no guarantee that they can pass along any information that will help you.
Sparring, is as close as most of us will ever get (it's also as close as we want to get). Sparring can tell us what technical syllabus work well in sparring. But it's important to remember that sparring is not knife fighting.
Well, you know what they say about opinions. Personally, having studied aikijujitsu and aikido methodology as well as FMA, I would say that the technical syllabus of blade oriented arts (there are several Filipino Martial Arts that do not use the blade much if at all), is far superior. If I am looking to get the best knife and unarmed against the knife training I would seek a specialist, just as when I want someone to fix the engine on my car I go to an auto mechanic rather than a gunsmith.
Sparring is very good. However, to get really good unarmed against the knife, you have to spar against someone who is good with a knife. If you can't do progressive indirect attacks where you cut or thrust on one line and change to another line instantly, can't cut and thrust multiple times per second and on various lines of attack, can't attack with fluid and varied combinations, and can't do all this without telegraphing your moves, then you are a poor knife sparring partner.
As for instructors, I have found, over years of training in various disciplines, to include special tactics and firearms, that the absolute best instructors had real world experience and dojo/sparring/martial training/range training experience.
Your mileage may vary. Additionally, and somewhat off topic, I have seen some of your videos and, based on the body mechanics I have seen, you seem to be one of the more "martially minded" Aikido practitioners posting here. I disagree with you a bit on knife training, but applaud your efforts to find a good "combat system" within your Aikido.