You don't even need accuracy for mad machine, you just need speed. I wouldn't call it a "highest tier" map since the only difficult part about it is that it has 270 BPM 1/4 streams, but they are not very long (not bad for stamina) and have multiple hold-sliders in between them. It's OD7, which is lenient for 270 BPM, you could be out of time (slower), even double-tapping, and still get 300's.
Afaik Tom's algorithm uses strain values, so the number of hold sliders in between these streams reduces that value and there are many slow parts too, which inflates your accuracy for a 270 BPM map, mainly due to half the map being sliders, giving you most of your combo. Sliders are ignored for accuracy calculation, so you would need a high accuracy score to get any pp. Combo matters due to these fast repeating sliders and the combo in the screenies is too low.