Yeah possibly. I see 2 avenues:
- You are right and once Luffy encounteres Imu-Gunko its a quicker resolution to the end.
- This arc is much longer than we think, and part way though we get the RA/HK conflict in which the RAs partially lose (or that issue is resolved in some form no idea) and the HKs get summoned to Elbaf to take it over for Imu
Part of me thinks its the latter because
1. Oda started beef between Shamrock and Loki and now Shamrock is gone lol
2. Loki's full flashback here isnt even shown yet. We know major Flashbacks tend to occur before the final conflict happsn, which ends taking 40-60% of the arcs length
3. Dragon's words in 1125 or 1126 (forget the chapter) imply that they "need" to win before the world descends into chaos fighting for land. They are obviously going to fail for the most part because theres no way Oda isnt going to show that chaos after teasing it