Honestly, and this is just me speaking as an individual here, no expertise on this particular subject (as I haven't been in to work since she headed there lol), but I think it's a win/win for both sides.
The Kuz is a joke. She's a jeep carrier in the world of big boats. (Yes, I know she's long, but her compliment is fairly small, and as a carrier, she's not ideal. She DOES have some shiney weapons systems, but if your carrier is fighting surface contacts, something is wrong...) That being said, she's most definitely testing their new aircraft assets. For them, yeah, they get to test their MiGs, but for us, we get to watch. We can sit back and evaluate the -29K from a safe distance and see just what they can do.