Ziame said:
Panzerkampfwagon IV was vastly superior to T-34, despite what World of Tanks may indicate.
Ehh, depends what you are considering as 'vastly superior'. The Panzer IV ausf E and F, with the short barreled 7.5cm Kwk37 L/24 gun were only marginally successful, whereas the T-34-76 armed with the F34 76mm gun could penetrate the Panzer IV at all ranges. However, the T-34 was hampered by the 2 man turret, meaning the commander had to both command the tank and act as gunner, whereas the 3 man turret on the Panzer IV allowed the commander to concentrate solely on commanding his tank, making for more efficient operations. T-34's were also hampered by a shortage of radios, but that's more of a problem that was indicative of the Russian army at the time.
The Germans, after the nasty surprise the T-34-76 and the KV-1 presented, hurried out the ausf G with a 7.5cm KwK40 L/43 gun, and retroactively fitted it to ausf F. The G also addressed the armour deficiencies with applique armour on the front plate. This ultimately lead to the ausf H an J, with the thicker armour incorporated and armed with a more powerful 7.5cm KwK40 L/48 gun, making for a much tougher tank against the T-34-76, and there still was the crew advantage.
However, the Soviets responded by increasing the armour on the model 43, and new ammunition types that were becoming available that were able to effectively penetrate the thicker armour. The thicker armour did not do much to offset the 75mm guns though. Of course then there is the T-34-85, which had a three man turret and the 85mm ZiS-S-53 gun which was designed for the Panther and Tiger, which makes a mockery of the Panzer IVs armour.
The Panzer IV and the T-34-76 were pretty much on par with each other. In their final forms both had pretty much extended the life of their respective chassis as much as they could. Now, if you are talking about the Panther, that tank outclassed the T-34 on almost all levels. the 7.5cm KwK43 L/70 gun could rip through a T-34 at all ranges, whereas the T-34-76's needed to get a side of rear shot for their F-34 guns to even stand a chance.
Edit: Just a note on the Tiger II, it did have problems of its own. Aside from being a gas guzzler and mechanically complex, the drive train that was installed was designed for a much lighter tank. So it was rather weak and in the hands of an inexperienced driver (of which there were many when it entered service) it tended to break. As far as I know they never really solved that problem. But otherwise it really was a monster.