Well that's the entire thing is if you listen to the Navy SEAL talking about this why you would even need to set off an explosion that would measure so high?
Literally all you need is a couple of ounces because the second that you rupture that pipeline sympathetic reaction happens causing further damage to that pipeline ripping it apart....
Why would you need to set off such a huge explosion when only a couple of ounces of explosive on a shaped charge is more than sufficient?
Well it's a statement. And very carefully done at the very edge of a NATO country.
And the force of that tells a huge amount about exactly what munition was used.
You're talking about thousands of tons of energy was released to cause a 2.3 Richter scale event.