Lujo, impressive work on the Demonic Library demon lords!
Though it's coincidental that you are only level 2 because you're playing a strat that does not require you to level, because all its components are level-independent (mana) or highly tweakable at low level (base damage for an Orc). Without the converts you'd correspond to maybe a L5 or so. Plus you've spent lots of blackspace.
When I played the GobboSorc yesterday, I took down my first demon lord at level 6 (I could've dropped one earlier but I wanted to use resources more efficiently), then went on to take them down one-by-one with very little exploration, just refilling on the level-ups. Zero effort, no risk, no need to find WEYTWUT or PISORF or think about placement, no permanent resources spent! PISORF is strong, can be crazy good with the right constellation of things, but I don't think you're doing the comparison justice by taking the best possible PISORF scenario where everything meshes together and you've gone into great lengths to make it work, and compare it with just the basic "I pick up BURNDAYRAZ and cast is couple of times" scenario.
If you want to compare best case to best case, consider something like the Orc Wizard who went Binlor -> JJ/Mystera and converted stuff to boost base damage and got lucky finding stuff (i.e. teleportation magic, etc.)... Versus a fireball user who has everything going and got lucky. I had a NC run with the Gnome Sorcerer where I got lucky with my shop spawns... The result was a Feeling Parched run. And confirmation about the firepower of the combination (enough to take down NC+VT with nothing but fireballs).
So if the point you're making is that PISORF is strong, and a valid strategy, I fully agree to it. If your point is that the tooltip isn't clear, I also subscribe to that... But I don't think PISORF in any way overshadows fireballs. All things considered, I still use BURNDAYRAZ as my main caster strat, though I do use PISORF strats quite often (probably 60%-40% split in favor of fireball due to extreme simplicity of setup and super efficiency, and really cool flame animations).