Neither is exceptional, which is why you can get in without ADR's. BRG, has really good beer, decent food, not exciting but what makes it for me is in good weather (in other words, not stiking hot) getting a table outside and enjoying the view of the Boardwalk and the water! The restaurant is odd shaped and a little clausterphobic for me.
ESPN, likewise does not have great food, just decent, just don't order a salad (very bad) but the sandwiches are good. It's biggest downfall for me is the noise level!
Pick your poison, BRG has a slight lead over ESPN!