Aikido is by far the most complicated martial art. Not only must you focus on the various complicated moves and techniques that must be pinpoint accurate (and consequently, if executed correctly, can be twice as effective as anything), there is also the Ki and energy factor you must master- knowing how to use energy and relaxation to your advantage in a fight. Trust me, it aint that easy!
Jiu Jitsu I'd say is the second most complicated.
Jiu Jitsu I'd say is the second most complicated.