What Waldo said was it does help you get going in slippery conditions, but it doesn't help with handling or braking. He also said it was more fun but again that's not the same as safer. Waldo was reacting to the marketing that touts it as "safer", especially in winter climates, because it's not AWD that makes it safer but proper tires that don't lose their grip in the cold and in snow so that you can corner and stop better.
As for Ford's AWD system - it can transfer 100% (or close to it) torque from front to rear based either on actual slippage (detected by differences in wheel speeds) or when it anticipates slippage (turning the steering wheel while accelerating hard e.g. It's all controlled electronically by the PCM. The new Explorer version is even more sophisticated as far as the programming but it's the same basic system. It does not transfer torque side to side directly although it can brake one wheel effectively transferring the torque to the other wheel but I think it's only done as part of stability control or the Explorer's off road programming. I don't think it's done on dry pavement to enhance handling like the Acrua system.