Two positives and two negatives:
Pros:
1) Jerry Bruckheimer produced - so the filming, action, close-up scenes have a movies feel. Not cheesy.
2) Alba and Union are strong. The roles are playful, confident, sexy.
Cons:
1) The writing / scripting has some gaps in plot development. That's probably why reviews are low.
2) most episodes are 45 mins. Creating enough depth in that timeframe seems tough.
Conclusion: It's not trying to be a super serious NY style cop show. For better or for worse remember it's modelled after the BadBoys movie franchise. And it's got the swearing and nudity of the movies, a fresh feel for a tv series (meaning most hospital and law enforcement series are on network tv which doesn't allow it).
Watch 1-2 episodes and decide if it's your style. I liked it.