Those are good articles, yes, but you are comparing apples to oranges.
Fox 2.0 is the bottom of the barrel of the setups above the Eibach/5100/Dobinsons Twin Tubes level. The front is weak and the entire setup has a reputation for beating the crap out of you on the road. On top of it, you will need to deal with rebuilding it. If you go that route, get it from Accutune with their adventure tune and make sure you have reservoirs in the rear. You can add the LSC to stiffen it from there for interstate handling or fast offroading.
Icon 2.5/2.0 rear will be on a much, much higher level. So that would compare to Fox 2.5/2.0 at which point it becomes a matter of preference, price, and durability expectations.
If you want a superb road setup that can do slower speed offroading, you will be better off with 6112 on standard springs (which are much less than 600lb) and Icon 2.0 in the rear or Fox 2.0. You can get away with 5100 or Eibach in the rear as well, especially in the Midwest.
If you want a great entry level setup, then 6112 on 650lb springs and either Icon 2.0 or Fox 2.0 with resi is about the most bang you can get for the buck.