looks fun, if nothing special
I saw it last night. That's exactly what it was.
JLo was the weakest link, but not because of her acting (she's actually a pretty good actress, as Selina and Out of Sight demonstrated). Her character was written in a way that her motivations came off as forced simply to move the plot along.
I have to admit, however, while Statham was okay, I sort of wished they'd reversed the roles and Michael Chiklis had played Parker instead of the antagonist. A "Vic Mackey" style Parker would have been great.