I think Gundy wasn't getting a response from Howard by asking him directly, so now he's put him on the spot. The truth is Dwight is starting to stake his claim to being the best in the game, but without bringing it on the defensive end, he will always take a back seat to TD.
Orlando is like the 10th best team in the league, and probably are a player away from really contending.
Getting more out of Howard on the defensive end might push them up a bit higher, but it still won't change anything. Right now, they're not good enough even if he gets another 2-3 blocks a game.