I have had numerous sets of BFG ATs over the last 20 years. Even had a 1st gen set on an old truck I bought back in the 90s, up to the current KOs. Last year I decided to try a set of Toyo AT2s (285/65/18)on my F150. In that size, the Toyos use their "extreme" tread design. Basically the same tread pattern but spaced a little further apart and a hair or two deeper. I have also ran a set of 1st gen Toyo ATs on a different truck years ago. Granted, I don't have a set of KO2s to compare but here are some of my thoughts when comparing the Toyo AT2 to the BFG KO AT;
The tread design and sidewall of the Toyos look cool. At the time not a lot of folks had them and I was asked quite a bit what tire that was. The sidewall is just as thick, if not thicker, than the BFG.
The Toyos balanced great. Each tire only needed about .75 oz of weight, one tire required NO weight. No noticeable runout on the Toyos, these tires were like perfect circles. The original Toyo ATs were usually very good about this as well. I've had balancing and runout issues with BFGs before. Advantage: Toyo
The Toyos rode great. Really smooth for an "E" load range tire. With that being said, the truck I had before my F150 had "E" load range BFGs and they also rode very nice. I would say it's a tie in this category.
Even though the Toyos rode great, they were pretty loud for an AT tire. Below 50 mph the noise level is pretty even with the BFG but over that speed the Toyos would howl like a MT tire. I was pretty shocked at how loud the Toyos were. The 1st gen Toyo ATs were not loud at all. I guess I'm getting old but I did not like the noise. Over 55 mph, the Toyos are much louder than the BFGs. Advantage: BFG
Both the BFG and the Toyo in the 285/65/18 size are heavy. Both weigh in at 58 lbs. Going from a light "P" series tire (~40 lbs) to the Toyos resulted in a 4 mpg loss. Based on my very scientific internet research, others had similar results when running the same size BFG on F150s. Tie
The grip with the Toyos was really good in all conditions. I had the Toyos in a little over a foot of snow to a sheet of ice. I had to try to break them loose in those conditions. I've also had very good luck with BFGs in the winter as well. Although the Toyos are not severe snow rated, like the BFGs, I wouldn't hesitate to use them in the winter. The Toyos also did good in mud, although I didn't see a whole lot of mud. Seen a fair share of pointy, jagged rocks and the Toyos had no problems whatsoever. To be fair, I've never had an issue in the rocks with the BFGs either. I drove across a lot of gravel roads with the Toyos but they never had signs of chunking like some of the BFGs get.
I had to bump up the pressure more when towing to get rid of that squirming feeling when towing heavy with the Toyos vs. the BFGs.
In all, I put about 20k miles on the Toyos in less than a year. With 5k tire rotations, the Toyos had very little wear. Again this was on a tuned ecoboost F150 and I due tend to have a heavy foot at times. Based on past experiences with the BFG KO, I do believe the Toyo AT2 will last longer.
I may try another set of Toyos down the road. Toyo does offer more sizes and more unique sizes vs. BFG. However, I didn't like the noise and Toyo doesn't offer a "C" load range 265/70/17 so I went with another set of BFG KOs on my 5th gen. FWIW, I know a few folks with the Toyos in a "P" series that claim they are very quiet. I may get a set of KO2s for my 4th gen in a few months. Then I can compare those to the KOs as well as the Toyo AT2.
Sorry for the long post!