What's a Wimbledon?
1. In the jet age, 1/2 hour is negligible.
2. Even with Global Entry, MIA customs is a ... time consuming affair. Since it sounds like you are not connecting, so negligible again.
3. Food. 6 of one, 1/2 dozen of another. Wine selection on IB MAY be a touch better.
BUT WE HAVE A WINNER!
Unless something miraculous has happened to TATL J on AA over the last 3 weeks, it is not worth an additional 105,000 miles (almost double) for essentially the same thing.
AA metal for EQDs, EQMs, and EQS. Partners (except BA) for miles.
Good luck.