This is a non-engineering explanation of what I have learned from the AMV guys.
The 3F, which has a greater outer offset and a no-spokes design, offers a different balance between grip and sliding of the chassis that allows for more sliding (“free” if you will). This enables the kart to rotate more contributing to freer handling dynamic/feeling. The wheel itself is not freer. I have heard the guys say that the 3F is less rigid than the Tiger.
The Tiger by contrast with a 3 spoke design and a more inward offset generates more grip which comes as a result of the wheels greater rigidity (spokes) and greater heat generated from a more inward offset.
I hope this helps. Sorry I am not an engineer so I can’t explain in more technical terms. I can tell you that when driving you can definitely feel the difference between the two wheels.