Tank Line and Tank Destroyer Line

i want to know the difference between tank line and tank destroyer line. What are their Pros and Cons ?

For eg: What is the difference between SuperPershing and B2? Is SP inferior to B2 in all aspects?

For the most part TD's main advantage is extra view range. They get 345 instead of 330 so a TD can spot a tank sooner and snipe them from afar. Other than that things are all over the place. B2 vs SP B2 shoots a hair faster and the SP hits a hair harder so firepower is kind of even though the B2 does more damage per minute. SP has a ton of turret armor so if it can fight the B2 hull down it will win. B2 has a little more speed but terrible handling. There's pros and cons to each but generally the American tanks can take a hit better than American TD's but the TD's have view advantage, in most cases speed advantage, and a little better damage per minute.

German TD's are all fixed guns while the tanks are turreted. Head to head the Td would win in a gunnery duel as long as it can face the enemy since it has better damage per minute and better frontal armor but flank them and they are toast. The no turret handicap makes them harder to play. German tanks are no slouch on armor protection either just not as much as the frontal armor on TD's. German TD's are best to stay behind the lines and snipe since if you get close you can be circled. The tanks are a bit faster than the TD's.

Russian TD's I guess are somewhat similar to German ones but they only get 340m view range for some reason and they have less armor but a lot more mobility so they are harder to circle. I only have really played the ISU-152 and it hits hard (better damage per minute than a T28) but even the frontal armor isn't too great so it is far from my favorite. They can get a little closer to the front with less fear because if a JagdTiger gets circled it is almost instantly toast and takes incredible skill and dumb luck to get another shot at the guy circling you, it turns that slow, but the Russian TD's pivot pretty quick so it's much harder to keep out of that guns firing arc. It's still not recommended to dogfight with it of course but you're not out of the fight when someone gets behind you.

Thank You StrikerUSA It cleared my doubt. Thanks for your help !!