The MaxX K has a one-size-fits all adaptability that the A60 Lacks. The MaxX K also fits either the left or right ankle (is unilateral). By comparison you would need 6 A60s to have the same coverage, however, they only come in the same black/gray color scheme. The MaxX K comes in 10 colors.
Further more, the A60 single strap is very serpentine and easy to misapply.
All orthopedic surgeons and physical therapists prefer the “figure 8” style of strapping that more closely follows the typical “basket-weave” ankle tape job.
The A60 was designed with compression to help reduce edema (swelling) and thus was designed to help heal an injury.
The MaxX K was designed specifically to help prevent injury, and thus does not have the compression component. Therefore the MaxX K is lighter weight, cooler, and more comfortable because it is less bulky in the shoe.
Lastly, the MaxX K is made from components in Colorado and assembled in California. The A60 is assembled in China and packaged in Mexico.