The German Leopard 1 MBT (Main Battle Tank), sometimes classified as a "Medium Tank", was built to have strong advantages in Mobility and Firepower, at the expense of Protection. This changed over the years however, as more armor and redundant protection systems were integrated into it (along with many other improvements) eventually resulting in the Leopard 1A5.
Canada's Leopard C1 was a licensed copy of the Leopard 1A5, but received an upgrade in recent years to a standard beyond even the 1A5; the result was the Leopard C2. This model is also notable as being the only Leopard 1-series tank to ever draw blood in combat --- and in Afghanistan of all places, where the Leopard C2 has defied all odds and become a battlefield legend.
But here's an interesting question; how does this machine compare to the US Army's M1A2 Abrams SEP, oft-claimed to be the best tank ever built? After all, the Leopard C2 has proven it's worth in COIN warfare, but what about tank-versus-tank combat?
If the M1's advocates are to be believed, the M1A2 SEP should totally wipe the floor with a tank as "marginal" as a Leopard 1 variant, even the vaunted C2. However, tank superiority is measured quantitatively by physical attributes --- not by prejudice.
So let's see what happens when we compare the numbers for the vaunted M1A2 SEP to the "ho-hum" Leopard C2, shall we?