This is how it works in WT, and from what I understand these stats are identical in game save for the explosive mass stat, which is toned down on all of the rockets so that it’s not absolute hell for everyone. Explosive mass governs splash damage, while TNT equivalent governs overpressure.
Brother this is the stupidest sh*t I’ve ever heard TNT equivalent is how much explosion it’s gonna make based on TNT that means an explosion from 890g of PB-2s warhead mass is equal to 1 kilogram of TNT haha man this is so stupid god maybe you should stop playing US for a while and play Germany for once then maybe you wouldn’t be this brain rot though all of us are brain rot from playing enlisted but some more than other
What something means IRL means jack shit for game mechanics. There is a reason WT lists both of those numbers, and they each have a different function within the game. Explosive mass governs splash damage, TNT equivalent governs overpressure. If you have an issue with that, take it up with how WT is coded.
Also my last half dozen games have been Japan, so try again.