For the life of me I can't remember anyone saying they were "just like an ACOG". But I'm getting older and my memory is probably failing. Obviously the quality control on the T168 is pretty bad, some guys got bad ones, sent them back and got them replaced with better ones. I was one of the lucky ones that got a good one right off the bat. Crosshairs are well centered and not rotated in the body, the glass is clear. The only downside is the illumination switch is a POS. But since I don't use that feature I don't care. I've probably fired 500 to 600 rounds through my A2 with it attached to the carry handle. It's a decent range/plinking/small game scope that's so cheap that when it finally does break you probably won't care.
That being said, the Simmons Pro Diamond 1.5-5x20 is a higher quality scope, it's about the same price (but comes with no mounting hardware) and for those that care it's NOT made in China. I picked up one just for the heck of it, mounted it to my M4gery and spent the day at the range with it. The person who recommended it to me used it for hunting Javelina and really liked it. I came away with the same impression, it's clear, keeps the same point of aim at all magnifications, and has positive adjustments. The only downside is the 1/2 MOA clicks. But considering that it's a 200 yard and under optic that's not really a problem. It's not a clone, just a good scope for the price.