‘Hard Knocks’: We’re the Raiders a hit — or flop?

Too much AB? Antonio Brown was a “Hard Knocks” star, but did viewers tire of his antics?So was “Hard Knocks: Training Camp With the Oakland Raiders” a big hit for HBO — or flop?

It probably depends on who you ask.

The annual fly-on-the-wall series produced by NFL Films finished its five-week run on Tuesday with mixed reviews from fans, TV critics and NFL observers. As for the audience, HBO and Nielsen report that an estimated 749,000 viewers watched the finale — a 13 percent increase over the previous week’s audience of 664,000.

But you have to be careful with ratings reports because broadcast and cable networks always spin things toward the positive. What HBO won’t tell you is that Tuesday’s…