How could the Sherman be on the list? It's main strength was not in tank itself, but in the industrial might that produced so many of them.
The T-72 is a great tank. It's like the R-7 booster of tanks. The basic design is so solid, it's been re-used for decades in progressively newer and better tanks. The R-7 booster started life as an ICBM (one of the first was used to place Sputnik in orbit) and was refined over the decades. An R-7 variant launched Yuri Gagarin (first human in space), then later R-7 variants have launched every cosmonaut through today as the 'Soyuz' rocket. A completely evolutionary design, same as the T-72.