osu! scoring info is wrong

[cl8n]

https://osu.ppy.sh/wiki/en/Gameplay/Score/osu%21

looks like the original author of this made a lot of assumptions that just aren't true. spinner score bonuses are wrong & the normal spin points are not mentioned anywhere, difficulty multipliers do not affect the score in the way stated, there's some random mixed-up info about scorev2 here and there (#2026, #2025), some of the formulas appear more complicated/confusing than they really are (#2470 (comment))

and I didn't check yet but I'd assume some of these problems apply to the other game modes too