Heisei Godzilla, as portrayed in the Godzilla films released during the Heisei era of Japanese cinema (1984-1995), is often depicted as an incredibly powerful and destructive force. However, it is important to note that Godzilla is a fictional creature, and his abilities and feats are subject to the creative interpretation of the filmmakers.
In the context of the films, Heisei Godzilla is indeed a formidable force capable of causing massive destruction. He has been shown to possess immense strength, durability, and powerful atomic breath, which can level buildings and cause widespread devastation in cities. He has also battled other powerful monsters, known as kaiju, and has come out on top in many of these encounters.
While Heisei Godzilla's destructive capabilities are significant, it would be an exaggeration to classify him as a "planet buster" or a "star buster." These terms typically refer to characters or entities that have the ability to destroy planets or stars, respectively. Godzilla's destructive power, though substantial, is usually limited to a city or a small region.
It's worth noting that Godzilla's power levels and abilities have varied across different iterations and interpretations in various films, TV shows, and comics. Therefore, the extent of his destructive capabilities can differ depending on the specific storyline or version of Godzilla being considered.