On w12 - yes it is.
All those lucky ones got high levels in a few days and that means better jobs and better skils... And the most important thing: more money to earn from jobs/duels.
Those unlucky ones and new players that came after the update and will come after the update will catch up with them when? Never. On w12 - never. Should I remind you on XP bonus that was added? So a new player gets... 2.5 XP tomorrow, those who did the quest get... 25 at least. Rhis reminds me on Achilles+turtle problem, but no matter.
To add a requirement to this quest before opening w13 was a bad decision. And wasn't you the one who said somewhere that nerfing things is the major cause for ppl leaving games?
Devs simply ruined w12. Let's hope nothing else will be nerfed on w13 two weeks after it starts.