The MT7621 GL INET MT1300 result of 83 Mbps is quite slow compared to MT7621 ER-X Wireguard performance of 150-160 Mbps reported here. Though the MT1300 result is consistent with performance of ~90 Mbps for the MT1300 advertised by GL INET, so there is that.
The NanoPi R2S result of 234 Mbps compared to 517 Mbps on a Pi 3B looks odd too, considering both are running quad core A53 ARM CPU's at the same 1.2 GHz clock rate.