User blog comment:Omega natsu2/Chapter 371: Tartarus Arc, Part 2: Song Of The Heavenly Dragon, Predictions./@comment-4829046-20140214084359/@comment-7418318-20140214092839

The Lacrima only blew up FT's guild-hall without even doing any damage to the surroundings and the Tartarus HQ that was build on top of Cube by itself was already a lot bigger than the guild-hall. There's no way this measly little bomblet would be enough to destroy Cube.