Great Prem tank! Just salonat! (War Thunder)

Usually the tanks I don't play, but I got a free premium T-34Э.
I played it one fight in arcade and noticed that the yield of this pseudoprimes the tank is not different from the usual linear T-34Э. In arcade the yield of both tanks are the same and equal to 80%. What is the meaning of Prem technique in this case?

Prem T-34Э
http://s019.radikal.ru/i637/1703/fe/c42f59d1ee7a.jpg

The usual T-34Э.
http://s50.radikal.ru/i129/1703/ca/077b08145a49.jpg

Just salonat!

PS: how to insert pictures? The IMG tag is not working!