just checked both lounges.. I like the loyalty lounge . Business lounge is somehow small. There are no differency for food and beverage side. but business lounge has digital golf section etc.
by the way we use business lounge with our boarding passes , after that Loyalty lounge did not open entrance door with the same boarding pass. but they open manually. Not sure but it looks boarding pass is one time use only
I think lounges have nothing missing than Atatürk airport cip lounge, even more ( gozleme is even avaliable afternoon, Turkish traditional food is added )