Nice links Peter. I especially liked the European Armour video. For me at least, the principles are the same, while the tactics are different. Agreed that it tends to look alot like combat sports of grappling as far as pummelling and takedowns. However, why are those things also not within the context of good aiki principles? Can you not have Aiki in those.
I think a big part of the problem is that alot of people look at the basic kihon of what is typically practiced in aikido and look at it as a collection of techniques and tactics.
If you are working Aiki and understand Aiki, then you really don't have this discussion anymore as you realize that the techniques are just there to give context and in most cases, I think they are a waste of time as it is way too hard to learn Aiki while trying to do technique.
Personally I think there is alot of confusion out there about Aiki, Aikido, and techniques/tactics and Jiu Jitsu in general.