This would be awesome!
Leopard 2 A6 use 120mm L55 caliber gun which is 25% longer then M1A2 120mmL44 gun, therefore gives 25% more punch power, Leopard 2A6 can engage enemy from 4000m compare M1A2 3000m,
Leopard 2 A6(62 tons) armor has more protection then M1A2(67tons), because it use more angle armor, front side use Arc shape armor, good protection for top attack and bottom (for mines).
The Leopard (72 km/h 45 mph) is also faster than the M1 (56km/h or 35mph).
Germany always has been the Military power hasn't it? I mean, even in WWI and WWII, numerous times, it looked as if Germany would win the war at 5 to 1 odd's.