Godzilla's dorsal plates resemble the GKOTM design.
• Kong's axe is not a simple axe, but a more incredible and cool weapon. Of course, I'm not saying that this weapon is made of human technology. I'm sure you will like it.
• Lots of science fiction elements and future technologies. GvK is not as realistic as the previous MonsterVerse movies. The level of human technology will remind you of Pacific Rim or the MCU movies.
• Mechagodzilla can fight at close range or use powerful energy weapons.
• The Hong Kong battle between Godzilla and Kong is about 5 minutes. It's a completely continuous action scene that doesn't switch to the human story. Godzilla looks very beast-like, incredibly violent.
• Concept art shows Kong climbing atop a building in Hong Kong while Godzilla tries to shoot him down with the atomic breath.
• Kong's territory now is the Hollow Earth world with sufficient radiation. The radiation on the surface of Skull Island is limited, which may cause Kong's species to shrink. This might explain why this Kong is so big while his ancestors were smaller.
• The aircraft carrier that Godzilla and Kong fight on is a normal aircraft carrier and a tribute to the giant raft from the original King Kong vs. Godzilla.
• The Hong Kong battle between Godzilla and Kong is the climax of the movie. This battle is an absolute epic. It will decide who the real #1 monster is. The battle with Mechagodzilla is the second climax because MG is a huge threat to everyone.