All I know is that the Jagdtiger has 1600 health compared to the KT's 2100 and has an AMAZING main gun against enemy tanks. It has not turret though, which is a big negative. Still, the gun does 250 damage or something and always penetrates. I think it might have Jagdpanther armour too, which is worse than the KT's "Tiger -20" armour I believe.
That video is completely inaccurate. You can see some of the tanks start on low health with engine damage. Also, a single battle will never be representative of the overall comparison. You would have to redo the battle at least 30 times to get a good result. Or just use the simulator program someone made.