My wife and I debated long and hard about 2 or 3 stars.
The atmosphere is nice, and the service was fine. But the food wasn't very good to be honest. We ordered the pork, which was good, but bordering on tough and dried-out. In general, the food was a shade towards luke-warm, and on the side of under-seasoned. I know that tastes vary, but I think you can find much better food at Soba, or even PF Chang at the Waterfront.
We've both eaten at some truly exceptional restaurants. The key is that they maintain consistently high performance every night. Maybe Richard Chen Pittsburgh has great food sometimes, but it was bland and uninspired when we went.