BA miles are FAR more valuable than Delta miles (the Zimbabwe of the FF miles world

) besides the ability to redeem awards on OW airlines members with the same address are allowed to combine their miles (as best I know the only other airline to permit such, free of cost is HA).
Even more useful is that BA allows you to redeem one-way awards on all partners, some of them at a lower cost than most other programs.
Example? I have redeemed two one-way C awards on LAN. SCL/LIM for 20k miles each and even some intra-Europe one-way coach awards are 7.5K miles.
mike