I'm curious as to what you meant about the Escape not being a real 4WD
Doesn't Ford own Mazda?
From what I heard, I thought they have seperated. Ford had a share in Mazda, but since around the bailouts, Mazda broke ties with Ford (even though Ford later didn't take the bailout.) Mazda didn't sell the Tribute in 2007, but brought it back for 2008. I do see it is still being sold for 2011.
As for the real 4WD, the Escape/Mariner/Tribute is FWD with a rear PTO that engages when slippage is sensed in the front wheels. Real 4WD you pull a lever and the front and rear axles are locked together. In my opinion, if the vehicle senses slipped, it is too late. You've already slipped. Real 4WD will always be locked together front and rear.
I've had the situation where this "automatically senses slip" garbage almost wrecked my Tribute. I was pulling out onto a road when the front hit a more slippery patch of the snow/ice. The front wheels slipped and the car understeered (front slid sideways away from direction of the turn.) Then the rear PTO kicked in and spun the rear wheels causing the back end to start to come around (oversteer.) I ended up sideways in the oncoming lane with cars coming. As quickly as I felt it happen and I could let off the throttle, this happened.
Two things would have rectified the situation and not caused it to happen. First, true 4WD where the slipping of the front and sudden shock to the rear when engaging causing the rear to spin wouldn't have happened. The other thing would be...... snow tires, which it would also not have slipped in the front under normal driving inputs. Thus, easiest and cheapest thing to do is to get good snow tires no matter what you drive.
This morning in my car (Tribute is my wife's) I drove 25 mph (55 limit road the whole way) in to work, was sliding all along the road everywhere, nearly was stopped and got stuck on 3 hills on the short backroad to cut over to work, and the final hill had to stop because another car was coming and I couldn't power my way through the thick stuff on the side to let him by (everyone drives down the middle of the road leaving the sides 6 inches thick, drives me crazy.) On that last hill, it took me quite a few minutes to get the car going again with others behind me (in their 4WD trucks.) I did get it going though and made it to work. I drive a VW Jetta with not necessarily a lot of power, but a ton of low end power. With the tires that came on the car, if I just let the clutch out without the traction control, the wheels would just sit and spin at idle.
Next paycheck, I will be buying snow tires. Have my eye on General Tire Altimax Arctic for $85 each. Compared to how my car drove today in 6 inches of snow, as well as how my Tribute drives with normal average all-seasons, I am confident I will be able to drive in just about any snow we would get here in north western PA, as again, it isn't about FWD/4WD/AWD, but all about the tires that you are driving on.