>>149779759
The show doesn't define "Invincible" in that way at all. It just says that "Jet Jaguar is invincible". You are the one assuming that's all there is to it, even though we see that Godzilla Ultima (a similar being) has a lot more to him than just appearances.
>Post the feat
>"Shiva and Godzilla are just different manifestations of the same singularity."
>>149779766
For extra context, the novelization says that Pelops II still couldn't find the proper code without an actual miracle.