I have posted a number of photos of the 21st Century Kingtiger on the forum in the recent past; with figures for size comparison.
The 21st Century Tiger I is not the Cold Steel version and is 1/32 scale. The Cold Steel versions are oversize and I have examples of the Kingtiger, Panzer IV, Stug IV and Panzer III Ausf. L which measure at 1/30 scale. The Panther G is 1/31 and I will soon obtain a Cold Steel Jagdpanther to measure.
Some FOV armor is also overscale. The FOV Jagdpanther is 1/30.8, the Jagdtiger is 1/31 the M26 is 1/30.6 and the Panzer IV is 1/30. 1/31 scale armor works well with FL, WB and Kronprinz figures IMO. Other FOV armor is 1/32 i.e. KV-1, Tiger I and Kingtiger. Measurment is the only way to determine FOV scale as they vary between 1/30 to 1/32. Mold wear could account for the variances; as a lot of models have been produced over the 11 years FOV was in production.