So what is up with the pre wall of flesh ratings.
First the
calc isn't even on the verse page it is only linked on two pages
King Slime's and
Eater of Worlds's with the on page justification's being "Can easily survive an explosion from dynamite" and "Can easily dig through Ebonstone, which takes no damage from explosives such as dynamite" respectively with both linking the the calc the thing is the both refer to the wrong explosive device,
dynamite only blows up a 7 block radius. The item the calc uses is the
explosives which are an item that prior to defeating Skeletron and meeting the mechanic can only be found and activated by preexisting traps that can easily one shot a late pre-hardcore player, without damage reduction, doing 500 damage. The Terrarian can hardly even use them at this point in the game since they don't have the ability to interact with wires. Saying that the Terrarian should back scale since they can harm bosses that survive those explosions seems rather disingenuous given those bosses aren't one shot with hardcore weapons, I mean king slime can reappear with slime rain post moon lord and still not be one shot by most weapons.
The calc probably shouldn't use tungsten for the material destroyed either since it was in the form of ore.
Ore is usually not pure this is supported in terraria by the fact that they have to be
smelted in the
furnace. In fact, it takes 4 pieces of tungsten ore to create 1
tungsten bar which can be placed as blocks consisting of four bars . This implies tungsten ore blocks consist of significantly less than 100% tungsten.
The justification for 8-A is flat out wrong Ebonstone has been breakable by explosives since
version 1.1 about 5 and a half years before the profile eater of worlds profile was originally made and long before it received it's current tier and the other 8-A characters got to scale to it.