NSF is also reporting that it took out one of the lightning rod towers. It'll be interesting to see how much damage the pad and ground equipment sustained.
It was very likely the largest explosion in Florida spaceflight history. Considerably larger than when SpaceX blew up AMOS-6 in 2016, and that required a full rebuild of the pad infrastructure over 18 months.
I'm wondering about how it compares to AMOS-6. New glen is bigger than Falcon 9 & uses fully cryogenic propellant, so there would be definitively more energy involved.
On the other hand a lot of the damage on the Falcon pad was IIRC due to burning kerosene getting everywhere on the pad & melting everything.
In this case I would expect all the liquid oxygen and methane to either be involved in the explosion or quickly vaporize, possibly resulting in a different damage pattern on the pad.
You might be confusing cryogenic with subcooling - it is still cryogenic (or it would not fit into the tanks at any reasonable pressure), just colder and more dense (you can fit it a bit more than if its at a higher, still cryogenic temperature).