Sequels generally tend to learn from the film that preceded it. It’s not a rule, but common sense, figuring out a way to up the cinematic ante while still providing the basics that brought audiences in for the first round. “Wrath of the Titans” is the follow-up to 2010’s “Clash of the Titans,” itself a remake of a 1981 cult classic. Finding itself riding the event movie coattails of “Avatar” (boasting hastily post-converted 3D to squeeze paying customers dry), “Clash” unearthed blockbuster box office but surprisingly little love. “Wrath” looks to emphasize positively received elements while bringing a pronounced grit to the franchise, finding a meaner, earthy continuation that strangely ends up making a few of the same mistakes as before. At the very least, this new adventure has stronger CGI and 3D, but there’s not enough improvement in production imagination to make this second chapter leap off the screen. Read the rest at Blu-ray.com