So if you compare a diesel to a petrol-hybrid, and you use the diesel's NEDC rating and compare it to the hybrid's WLTP rating, then number bigger!
Lets make a real comparison: The NEDC combined rating for the 2025 e-POWER is 5.4l/100km (FWD). The 2018 diesel version you linked uses 5.6l/100km, and the petrol 2018 version uses 6.2l/100km.
For a truly fair comparison you could have looked at the non-e-power versions from 2025, which come in at 7.4l/100km.
e-POWER listed data is massaged NEDC rating. Real life users report closer to 7L combined cycle for 2025 e-POWER model, and it goes all the way to 10L pure long highway driving (no recuperation). In contrast diesel model does the sticker mileage.
How about one of the e-power nissans from the article?
https://www.automobile-catalog.com/car/2025/3381665/nissan_x...
https://www.automobile-catalog.com/car/2018/2605130/nissan_x...