Welcome to FT dcliev
IIRC the foot well in row 1 is not as wide as the other seats, but could be getting confused with other carriers.
I would go with 2A as you are not so close to the passenger next to you and it feels a little less closed in as you don't have the closet to contend with.
Other than that the two seats are much the same.
Enjoy your F flight on BA.