IFS is more street friendly because IFS keeps the tires flat on the ground more in relation to the vehicle body. Vehicle weight is also balanced better on each tire. The more a tire stays FLAT on the ground, with the same weights, the less it slips regardless of any traction device. That's also why cars have IFS in front and many in the rear now.
That is also why both wheels will spin together, even without a traction device. IFS also tends to have torque steer issues with FWD under hard acceleration and have limited travel. (of course there are custom long arm setups that try to address this)
Then again a RWD will do the same but without RWD steering there is no torque steer, just one wheel spins without a locker.
I am no engineer, just what I have learned over the years in 2x4's to 4x4s.
JMHO