HA vs Nexus, some Nexuses have higher stats?

[Lollie]

Coils by far is faster over all, trowing out fring benefit gear, once you have coils on farm which for most clear groups is immediatly after their first run you average time spent on a weapon noes dives, farming light for nexus is about 1 a minute so about 34 hours for that phase.

For the sake of argument lets throw range out of both equasions.
Assuming a group spent 16 hours a week for 3 months learning coils thats 192 hours, plus 7 more hours to even everyone in the group out to 1 weapon just gonna round this to 200 to make it easy. Subsequent weapons are 8 hours each for a total of 264 or about 30 hours a weapon.

The light phase of a relic is about 1 for 1 so about 34 hours a weapon, plus a more realistic 25 hours for the alex (not factoring in cost of mats) total time per weapon is a static 60 hours a piece. Total of 480 for all 9.
They break even at 4 at which point coils is faster. (And easier if we are using time as the measurement).

tldr: difficulty meassued at time spent is subjective to how many you want, on average that makes nexus the harder to get weapon.