It has 4 Cortex-A7 cores with up to 1.2GHz. Given the kind of stuff e.g. OpenWRT usually runs on, I would say it has more than enough power.

For simple workloads (e.g. serving static files via HTTP) I'm pretty sure it could saturate a gigabit connection.

You can even find pre-made travel routers with the Allwinner H3: https://www.amazon.com/Portable-Allwinner-Quad-core-high-Per...