Whose got the edge in the snow? 2009-2014 model vs 2015-2019
 

Yeah yeah, all depends on the driver, I get that part. I also get that it depends on the tires too. Let's get that out of the way right off the bat.

Assuming same tires on both. Which model f150 has the edge over the other in the snow and winter weather driving? Maybe it's not a huge edge, but is there one?

Is overall weight difference a factor? 4wd system? Slip technology? Etc.

My vote goes to the heavier steel bodied truck.

I don't see how there would possibly be a difference. Vehicles with a longer wheelbase tend to do somewhat better. And the closer you can come to having equal weight on all 4 corners helps. Regular cabs, especially unloaded are pretty light in the back compared to crew cab trucks or SUV's. But the weight of the vehicle doesn't seem to matter. The configuration of the truck might matter, but those are available in all generations.

The new trucks do have a rain/snow setting, but this would only affect the throttle-to-throttle plate algorithm and likely, the TCS threshold. Both of these things can be mastered with an "educated" foot. I doubt it would make any difference to the actual 4x4 traction parameters.

All depends on the driver. Some people simply can't drive on snow, meaning the truck model won't make any difference at all.

They are IDENTICAL! I had a 2014 RWD, now have a 2018 RWD, both drive exactly the same in snow. The 16 4WD didn't drive any different either, only that if I did go off road, I had 4WD to get back on the road! :)

Perhaps I'm reading too much into your reply, but a 4WD is going to handle differently than a RWD when it comes to getting unstuck or not getting stuck in the first place. From personal experience I was stuck on an incline in 2WD. Shifted into 4WD so I could move. Also, in my experience, my truck is less prone to slipping and sliding when in 4WD.

I got nothing on th eOP's original question. Sorry.

I'm referring to how they handle on snow covered roads. They all handle the same, regardless of which wheels are doing the pulling, and the 16 I normally drove in 2WD, only put it in 4WD a few times, but the majority of the time was in 2WD. What it boils down to is the loose nut behind the wheel. It's a given that the 4WD will have more traction to get moving, but once moving the 4WD can actually become a hindrance in certain conditions, where not having power to the front wheels would be better, those who did skid pad training would know what I mean. What the OP is asking for is if there is a difference between gens, and I can say I have not found one.