The Raspberry Pi 4 is barely a real computer, and hardly comparable. The Honeycomb has faster interconnect with practically everything on the board, so can handle a video card, serious networking and storage performance, etc.
The LX2160a can handle up to 130Gbps of network traffic. That is what it is designed for. You also have the benefit that the Quad SFP+ ports can be configured as a network switch completely offloaded from the CPU. That is what this SOC was designed for after all. :)
The Honeycomb is older than RPi 4 so it made some sense at the time. It should still be faster for builds because of the 16 cores and the Honeycomb has far more I/O for people who need that.