So which one has more bass, Sennheiser Momentum 3 or Hifiman HE-R9 ?

Looking at the frequency response measurements for Dekoni earpads. Does it mean that they reduce the bass? Would appreciate if someone could explain me this chart https://dekoniaudio.com/product/dekoni-audio-choice-leather-replacement-ear-pads-for-sony-wh1000xm4-headphones/