Land Cruiser vs 4Runner Octane Recommendations

[Kroney70]

How come the Land Cruiser requires high octane gas, yet the 4runner (also hybrid and with same engine) doesn't?

 

[Dead Horse]

Probably to keep the proles from stepping into a LandCruiser, even if it's really just a Prado.

I'm assuming the 4Runner is slightly detuned. Or the engine has to work harder in the LC because it's heavier and it starts getting overworked when trying to hustle that pig, and premium fuel calms it down

 

[Kroney70]

Interesting info. I don't know enough about engines to understand but seems weird that they have the same engine but only the LC takes high octane. One of the main reasons that are leaning to the 4Runner.