To be honest, I don’t have chance to run high accuracy test myself… but from your result, it seems like hardware related, whereas Hardware 1 seems to do better in both test?
Any difference between the two hardware? antenna, etc?
Normally, we expect tracking mode (AT!GPSTRACK) to perform better, e.g. require smaller sensitivity as per PTS… but all depends on the sky condition…
In additional, do you use AGPS or XTRA feature?
Also, do you have chance to talk with your FAE from distributor or Sierra?