Here's a Moteino hooked up to the old Pi2 (the first two columns) compared to a battery powered moteino 3 meters apart. Notice how badly the Pi performs with its regular RSSI impairments - even though its Threshold isn't too bad.
!SRSSI:-45, STHRESH:212, GRSSI:-44, GTHRESH:239
!SRSSI:-52, STHRESH:212, GRSSI:-44, GTHRESH:238
!SRSSI:-62, STHRESH:211, GRSSI:-44, GTHRESH:238
!SRSSI:-44, STHRESH:211, GRSSI:-44, GTHRESH:238
!SRSSI:-45, STHRESH:212, GRSSI:-44, GTHRESH:237
!SRSSI:-45, STHRESH:212, GRSSI:-45, GTHRESH:237
!SRSSI:-45, STHRESH:212, GRSSI:-45, GTHRESH:237
!SRSSI:-44, STHRESH:210, GRSSI:-44, GTHRESH:237
!SRSSI:-62, STHRESH:210, GRSSI:-45, GTHRESH:237
!SRSSI:-62, STHRESH:211, GRSSI:-44, GTHRESH:237
!SRSSI:-45, STHRESH:210, GRSSI:-44, GTHRESH:238
!SRSSI:-44, STHRESH:210, GRSSI:-44, GTHRESH:239
!SRSSI:-44, STHRESH:211, GRSSI:-44, GTHRESH:238
!SRSSI:-45, STHRESH:210, GRSSI:-44, GTHRESH:237
!SRSSI:-44, STHRESH:210, GRSSI:-45, GTHRESH:237
!SRSSI:-49, STHRESH:209, GRSSI:-44, GTHRESH:238
!SRSSI:-62, STHRESH:209, GRSSI:-44, GTHRESH:238
!SRSSI:-62, STHRESH:210, GRSSI:-44, GTHRESH:238