It isn't appropriate to generalize that way, ....about any modern jet's potential capability... You have to address the specific model, and the applicable AFM, and airline policy.
For example, have you had any experience with the EDFCS AP with LAND 3 on the NG???, particularly with GLS?????
I have. It is terrific, ....even on a 90 ft wide runway, in pouring rain, in a very strong gusting crosswind.