Indeed. By "compensate for delay" I mean that we anticipate delay to which we are accustomed and act earlier than we would otherwise. Split-second reactions, as you rightly point out, cannot be compensated for in the same way.

Not true. The reason why lag is more noticeable with gesture interfaces is that you have to complete enough of the gesture for the software to recognize and interpret the correct movement. Killzone 2 has similar latency to Kinect but I didn't hear anyone else notice it when I bought it up.

They aren't from the page I linked to. I compiled the data myself from various reliable internet sources and extrapolated from there. The numbers aren't in debate, various tech sites reported them. I know, I'm awesome at secondary research.
If you notice any mistakes, I'll gladly correct them.

Killzone 2 latency is proposital... part of gameplay.
In Killzone 3 Beta changed that and some people are not enjoying.

For me in offline play the lag doesn't matter but in online play will hurts Move, Kinect and Wii Remote.

Good point; it's like pulling a long lever to close a contact. Of course this adds to the inherent hardware lag.

Lag is a funny beast. I have being playing online for a while now and when I first set out it was actually rather good to have 200ms my game of choice being TFC. I later upgraded my line to ISDN which gave 70-80ms which should of been better but really only equated to faster downloads. The thing is Valve introduced "lag compensation" which was actually for me a royal pain in the arse. I now play TF2 and can obtain sub 20ms which is awesome but I still notice lag but whose lag this is I am no longer sure.

My experiences with Kinect have not rated latency high on the agenda. I probably will not really know what issues I will have until I own and have played with Kinect for a while but ultimately by then I will almost certainly of compensated for the lag.

yes, because motion plus don't add to the lag, it adds more dimensions.

you have 20 ms ping on the internet? you must be connecting to something very close to you lol, usually when connecting to something you go through 5-15 hops to get there and each hop takes about 10-15 ms lol.  100-150 ms is pretty standard for online gaming.

anyways, its pretty interesting to see that kinect cameras only run at 30 hz, i wonder why they chose it.  perhaps theyre planning a hardware upgrade? lol

Kinect latency is also part of gameplay, both kinds. Anyway given the fact that everyone experiences the same latency I don't think it would effect online play given the fact that the same rules are effectively applying to everyone.

I guess the additional sensors require more data transfer and more processing, but I haven't heard anything regarding additional lag. It's probably miniscule, so no difference.