Predicting the results of a jury trial can be challenging. There are a lot of variables at play. This case has a number of hot-button issues; Florida’s Gun Laws/Stand your ground law, Race, and the technology evidence, which can be used to support a case but isn’t really a slam dunk.
This certainly could be an instance where there is no criminal trial but a civil suit finds in favor of the Martin family. But again, hard to predict.