What if you used an efficiency V obsidian pickaxe with a haste 3 effect and you mined obsidian. So if you mined 343 obsidian and put it in the 7^3, that would be 343 x 1200 blast resistance which is 411,600 blast resistance and the hardness of obsidian is 50 so really compact obsidian would have 17,150 hardness.
Also, although the mining level of the obsidian pickax is unclear, its very likely (but i suppose, still technically unclear) that it mines slower than a diamond pickax
The only likely field i see it being superior to an iron pick in is perhaps durability
Yes you are right... But say if we had mega compact obsidian that's basically weaker than bedrock but would feel like mining bedrock instead of compact obsidian.
Yeah but if you have a haste 2 effect with a efficiency V diamond pickaxe and like a line of cobble generators of your mining reach then you could instantly get a lotta stone (With hoppers to collect the cobble.)