Part of why LoRaWAN (like TTN & Helium) have better RF performance than meshtastic (and other lowcost LoRa meshes) is that LoRaWAN makes use of actual gateway chips which enable them to listen to 8 channels at once while meshtastic only uses one static channel at a time.
LoRaWAN gateways can then use intelligent scheduling modes (they call it device classes) to make super efficient use of the 8 channels and possible hop around noise channels too.
https://www.semtech.com/products/wireless-rf/lora-core/sx1303