AMD's Bobcat and Bulldozer

[Mats]

AMD said 16-core Bulldozer has 33% more cores than Magny-Cours and 50% faster than Magny-Cours

Divide 2 parts of the statement by two and you'll get:

8-core Bulldozer has 33% more cores than Thuban and 50% faster than Thuban

Take cinebench result and approximate:

That's just way off, you forgot the difference in clock speed.
The Opteron 6176 SE runs at 2.3 GHz, and the 1090T runs at 3.2 GHz.