picture_perfect :
It's no gaming monitor. Gray to gray is 5ms which is meh, and without strobing to compensate (pointless here anyway) it will blur badly. Hard to game seriously with 3.4 frames input lag. Probably great for photography though!
5ms is really not that bad IMO.
I think we have different opinions of what is acceptable. For example in the article:
"There aren't too many 60Hz IPS displays that can beat the 276E6 in the lag test. It's certainly the fastest wide-gamut monitor we've tested. It's not marketed as a gaming screen but will certainly work well as one."
I think the problem is that the method for input lag they use is probably different from what others use, just like the response time 18ms b-to-w instead of 5ms g-to-g.
If you want 1ms response times then you have to go with a TN panel and sacrifice color and viewing angles.
But seriously, you may want to READ AGAIN this page:
"For gamers seeking vivid color and a bright image, your monitor has arrived. That's assuming you don't care about things like adaptive-sync or high refresh rates. 18ms is an excellent score for any 60Hz display. We saw a visible improvement when we turned the SmartResponse option to Fastest. It introduces a tiny bit of ghosting to moving objects but that is more than made up for by significant blur reduction and an increase in motion resolution."
So again, not perfect, but then find me a monitor that is.