Help me with Lift Kits/Spacer understanding

[Maverick9110E]

So Looking at putting a lift on the 2010 outback. A lot of people mention the ADF kit for my car:

http://andersondesign-fab.com/product.php?product=2010-2014-outback-4-lift-kit
vs
http://andersondesign-fab.com/product.php?product=2010-2014-forester-2-strut-spacers-w-multi-link-spacers

That lead me to that page. What would be the difference between the 4" kit and the 2" strut spacers with multi link spacers? From my understanding the 4" lift gives you a 4" body lift and a 2" suspension lift?

Or is one really just a 2" and the other is a 4"? Also would there be a benift to having a higher lift in the back? Is that mainly for atheistic purposes or does it help compensate for the tail sagging when loaded?

Trying to compare it against this kit:

https://lpaventure.com/collections/outback-2010-2013/products/lp-aventure-2-lift-kit-2010-2013-outback

 

[Longshot270]

I've got half a spacer lift kit in my jeep patriot so that it rides level when fully loaded.

As for the two lifts you included, it says the 4" lift is a 2" suspension and 2" subframe (body) lift.