Ask any employee at Abbott. The original ABT is the much safer way to make long-term money vs. the spin-off ABBV. Even though ABBV is not a bad investment, the steady money maker is, and always will be, ABT.
Aside from this being a lame game for inept leadership, I would go with ABBV. The bogus pharma industry is being exposed for what it is. A fraud. There can be no health by taking medications for 99% of the population.