FBN A4 stainless 90mm (express anchor):
Ultimate tensile strength: 23.9 kN (ie roof placement)
Ultilmate shear strength: 24.0 kN (ie face placement)
FIS A4 stainless glue-in 90mm:
Ultimate tensile strength: 41.0 kN (ie roof placement)
Ultilmate shear strength: 20.3 kN (ie face placement)
So I am sure there will be some questions - here are some answers;
1] A roof bolt is stronger than a face bolt as the rock failure cone is greater
2] The glue-in is stronger than the express anchor in a roof as it has a a longer effective anchoring depth
3] I suspect the express anchor is stronger than the glue in rod as it is rolled and not cut.
There are other failure modes apart from the usual ones we see in a controlled lab:
a] Express anchors can slide out in soft materials - ie the rock doesn't fail (see Lip Service)
b] Glue-ins are not placed properly - ie plonkers hand mix the local DIY glue and then try and shove it in the hole

c] Plonkers try and save money and place cheap bolts that will fail over time (normal corrosion and stress corrosion cracking)