Here is Ultraman Scott, the tallest Ultra next to Godzilla 2021. Scott is 82 meters and Godzilla 2021 is 120 meters. Godzilla 2021 is not the tallest Godzilla, but I think Godzilla Earth is too big anyways so that's beside the point.
An ultra rarely ever is over 61 meters (200 feet), and I think that should change. My version of Ultraman is 80 meters tall, which is 2 meters shorter than Scott, but 2 and 82 don't really matter that much. My Ultraman is the same height as 1980's Godzilla.
The original Ultraman is 40 meters tall. The original Godzilla is 10 meters taller.
AWKWARD.
Its good that we got some Ultras over 200 feet like Joneus, the aforementioned Scott, and a few others, but Scott was introduced in 1987 which was close to 35 years ago. I hope when Shin Ultraman's height is revealed, he's not as short as some ultras, but also not as tall as...
Ultraman Max at his Max height (no pun intended)