The fine print if you don't want to follow the links *“Killer reduces peak ping by up to 77%" calculated from the reduction of peak ping rate from 74 milliseconds (ms) to 17 ms when using the Killer Prioritization Engine on the WRT32X and a Killer-enabled PC using a 10 megabits per second (Mbps) down/2Mbps up internet connection that has multiple devices consuming the 10Mbps connection.
The router works with any computer. To benefit from the Killer Prioritization Engine, you will need a computer or laptop with the following Killer Networking adapters installed:
"Expensive prioritization engine"? Without looking at their source code, I'd guess its nothing more than at-source prioritization tagging with one of their cards.
Here's at least one thread on the WRT32X, where the lead post indicates that the source (at least enough to boot) is available and compiles (September, 2017).
With all the work that has gone into the make wifi fast project and buffer bloat had anybody seen real data about how this expensive prioritization engine on stock firmware compares to the general openwrt work without prioritization?