A simple test to prove why 4.11's will spin much easier.
Go jump on a bike with any amount of gears. Have it on the biggest sprocket on the front, and smallest sprocket on the back. Try and skid up the wheels taking off on gravel or grass.. These are your 3.08 gears. Now switch the gearing on the bike to the smallest sprocket on the front and the largest on the rear try again to spin up the wheel on grass or gravel, this is what 4.11's are like.
Go jump on a bike with any amount of gears. Have it on the biggest sprocket on the front, and smallest sprocket on the back. Try and skid up the wheels taking off on gravel or grass.. These are your 3.08 gears. Now switch the gearing on the bike to the smallest sprocket on the front and the largest on the rear try again to spin up the wheel on grass or gravel, this is what 4.11's are like.
don't forget to apply that line locker........sorry hand brake
ALTHOUGH, the only possible reason why 3.08s could be easier is they would cause the rear wheels to spin faster. So if you imagine with 4.11s you would be at 5000rpm at like 35-40kph, whereas with 3.08 it might be closer to 60.
I know if i try and start in 2nd gear in the wet i just spin the rear tires but if i start in first i get traction. I guess it depends on the torque of the engine.