Anyone flown Turkish Airlines Business class? How does it compare to Delta One?

I am SEA-based and I am currently mapping my flights for next year. I usually fly to Southeast Asia and Japan. I am thinking of switching to ANA/JAL for Japan trips and Turkish on the occasional trips to Southeast Asia. Sure it is the longer route, but I figured it would at least net me more miles and points in a shorter amount of time while I build up more of Japan flying. The fares are the cheapest on TK, and less than half what DL charges.

It would be really great to get status on Star Alliance although with the recent changes at Skymiles, I am planning on not giving any attention to any airline-owned FF anymore and instead focus on credit card points giving me more flexibility.