One lesson we did learn from tank warfare, was in WWII. He that has the MOST NUMEROUS tanks, with the best tactics, can overwhelm an enemy with the BEST tanks.
While that may be true in a strict test of "tank" capability, the tank is evolving into a network of interconnected and intercommunicating vehicles known as a "combat system," which should be truly integrated on the battlefield. So while it may, at some point, have to survive "on its own as a single platform," that is not the design vision, nor the system's intended strength. It is intended to be most lethal and survivable as an element of a larger network of interoperating platforms, which include airborne and land-based platforms of all types.
If you watch Star Trek, think "Borg."