WR63:
In SFO, the crash seems to have been an act of obliviousness to really obvious flying conditions.
To put a finer point on it, two rated Captains did not maintain airspeed, apparently from not paying attention to it. It doesn't get more basic than that.
In Birmingham, airspeed appears to have been OK based on info available. Something else went wrong.
As "what" becomes more clear, perhaps valid comparisons can be made between the two events. In SFO, the pilots were alive to share their experiences with NTSB. Not so in this case.