come on man, we've been through this before, that is not true for all televisions. non-3d 120hz panels with a mode that turns off all post processing can be had and the input lag is +/- 10ms of all but the most expensive monitors.
http://reviews.cnet.com/8301-33199_7-57587317-221/game-mode-on-cnet-tests-tvs-for-input-lag/
i know leo bodnar from iracing...he and a couple of other gadget tweakers came up with that very useful device.
All hdmi connected devices may have input lags of several dozens of ms. Low input lag models are far and between.
Brand Model Number Size Display Type Input Lag (Camera) Lag (Leo Bodnar) Price
Sony KDL55W905A 55" LED LCD 8 ms 20 ms £2000
Sony KDL-55HX853 55" LED LCD 28 ms N/A £1750
Panasonic TX-L55WT65B 55" LED LCD 31 ms 38 ms £2300
Samsung UE55ES8000 55" LED LCD 31 ms N/A £1900
Sony KDL-55HX823 55" LED LCD 31 ms N/A £1500
Samsung UE55D8000 55" LED LCD 33 ms N/A £2000
Samsung UE55F8000 55" LED LCD 44 ms 44 ms £1850
Samsung LE55A956 55" LED LCD 45 ms N/A
Philips 55PFL8008 55" LED LCD 46 ms 50 ms £1900
If I was shopping for a gaming oriented screen I would get the new Eizo 240hz panel.