Well that's all fine and dandy but you didn't say how the panzer specifically helped you. I have trampled the AI with tanks, on occasion, although it is quite rare. However, when I am fighting with tanks my tanks are hitting cities that are defended by infantry or anti-tank infantry. Occassionally they will fight machine guns, and sometimes the AI throws hordes of cavalry at them. What has never happened, though, is a massive tank on tank battle, and I mean never. I've played probably a thousand or more games of Civ, been playing for years, and there has not been a single game that I have ever played, EVER, where my tanks were fighting other tanks. So how does the panzer bonus help? If you trampled the AI with panzers you could have done the same with tanks, there would have been no difference. As for the SEAL, well, I also highly doubt that unit made a significant difference to your game. In fact I'm 100% certain it did not. It looks cool, but it is meaningless.