LATENCY:
Input latency on wireless controller is apparently pretty LOW now, but I can't find an actual number.
To be clear, the ENTIRE input delay is defined as "BUTTON PRESS TO PHOTON DETECTION BY EYES" or something like that. If we break this down it is:
(Ignoring Network Latency too as that's hard to calculate, so we'll just assume it's fair to everybody. Network latency is why an MMO like World of Warcraft has "hits" not require precision. No sudden SHIELD RAISE to defend attach at the last split second as it's not feasible.)
1. Time to process on-screen data then PRESS BUTTON
(see then respond)
2. Time to transmit button press
3. Time to decode button press data by CONSOLE
10ms including #2 and #3?)
4. Time to process the new FRAME OF DATA in game
(I believe that's up to 67ms or slightly more depending on VSYNC buffer so if 30FPS.. button press just AFTER a frame transmitted so waits for NEXT frame. forget the details, and that doesn't account for skipped frames which adds even MORE latency... i.e. judder/microstutter)
5. *Time for HDTV to PROCESS the frame of data and display it
(Ideally less than 30ms. Some are over 50ms)
So it all ADDS UP. The extra latency of an HDTV can make the difference between a good experience and a mediocre experience.
Other:
For #1, the time to press a button (to react) for most people at BEST is:
AUDIO CUE - 125ms
VISUAL CUE - 250ms
So I'm guessing the time from when you SEE AN ENEMY to when your local CONSOLE can update the HDTV is at least 300ms.
Now NETWORK is confusing. I'm no expert, but from what I understand slight DIFFERENCES in Network latency may make the difference (everything else being about equal) such that the HDTV with lower input latency gives someone a better chance to RESPOND. He saw it first, he shot first, he didn't die.
So basically two issues with high HDTV input latency:
1. games feel slightly more sluggish (even if single player), and
2. worse performance in competitive games
SUMMARY:
Huh?
That's all just fun to know info. The real takeaway seems to be to get an HDTV with an input latency of less than 30ms. (at least in the "gaming mode" option which minimized video processing in the HDTV that adds latency).
It may be difficult to find that information. Not sure.