Well... this is a "modified" chinese (!) version and something different from the original thing.
This is the typical Suchoi Su 27B, You can find in Russia and some foreign customers with the "classic" cockpit and the modernized cockpit as well. I have tested it for FS Magazine Germany. It is a good representaition and not only a modified chinese pirate copy. (Original, not Bearsoft!)
http://www.flight1.com/products.asp?product=su27flankerIt is the version from the 80´s, the original "Flanker B". The other cockpit is for gaming only. Forme it it is a good representation of the original.
EDIT... I have edited the passage about the Chinese and their interest to steeling and copy technology from others. The damage in Germany last year for steeling and copyright-violations from China was around 50 Mrd Euro. ... but i think this is not the intention of the forum to discuss about the origin of this so called Shenjang J-11B.
To understand, what China is and how they steeling anything they need...
http://en.wikipedia.org/wiki/Art_of_war"The art of war"... Chapter No. 13 describbed the principles of Espionage.