I always liked to read the debates about the best tank in the world. They're fun and newbies can learn a lot from them but they seem to be very common. An interesting aspect is the factor of a tanks crew and their experience. The crew of a modern Abrams that is in its first day of training would not stand a chance up against a veteran crew of an old T-34 for instance. We all know why the Panzers had such a field day against the Russian armor in the first 18 months of Barbarossa.

I think the "best" tank has the most experienced crew running it.