... and that's what Oneworld is for in other regions. Technically BA serve 750 destinations worldwide in 150 countries.
Edit: And how would BA divorcing IB exactly help in those destinations? How many people would want to travel from the UK, especially with Spain's heritage within Latin America.
IB is falling behind in the Europe-Latin American market to its rivals and even its partner LATAM
Its is also cutting its European route network out of MAD (not good for the many Latin Americans who visit other nations in Europe, like Germany)
BA can serve the region via LHR, who also have a fairly extensive European network and have a good reputation when it comes to premium passengers (unlike IB)
Also does the figure include only flights out of LHR/LGW (thus not including OW member LAN) and exclude Qantas (who have "divorced" BA and gone to bed with EK) and Air Berlin (who are already getting closer to EY/AF/KL and Skyteam...)