I also agree there. 1:17 Leaf Storm Boss can only be achieved in Easy mode.
in the LS boss, it physically takes 12 seconds per attack sequence before the boss makes himself vulnerable again (with one exception at 2-to-go, which requires a wheel interrupt, so it doesn't count).
That makes the fastest possible time, in normal mode, assuming there are NO wheel interrupts, a total of 1:36:xx.
Not to mention, each wheel interrupt tacks on another good 10-15 seconds at the least.
Is that proof enough he's not reading the rules?