The thing you have to realise about many of Russian military sites (and I don't think this is an over-generalisation) is that they are incredibly patriotic, and love to point out the supposed superiority of Russian equipment compared to Western, and particularly American, equipment. It's best to take their claims with a grain of salt.
The Black Eagle is a concept tank, nothing more. Giving the state of Russian military funding I think it most unlikely the Black Eagle will get into production any time soon, or even that they'll have enough money to iron out the inevitable bugs.
I have my doubts about the Black Eagle's superiority over the Abrams because it's based on the T-80, which suffers the usual Russian problems of lack of armour and a gun that has difficulty penetrating an Abrams from the front at over 1000m. By contrast an Abrams can hit a T-80 with a sabot round from any range and blow it apart. All modern Russian tanks have this problem, from the T-72 to the new T-90. No matter how effective the new fire control, thermal sights, communications, active countermeasures and all the rest are on the Black Eagle, it really needs another 20 to 30 tons of improved Chobham armour over a T-80 to compete with an M1A2. That's in my personal opinon, of course!