Even overall, when you analyze the volume-length of each saga, Oda keeps on dragging it pointlessly.
The King Piccolo arc, in early DB, is
two-and-a-half volumes, which is incredibly tight when you consider what happens within it.
In fact, most of DB's early sagas don't go over 2 volumes each, while during the Z sections, sagas average around 10 volumes per.
DB
- Emperor Pilaf Saga
Volumes 1–2 (Ch. 1–23)
Length: 2 volumes
- Tournament Saga (21st Tenkaichi Budokai)
Volumes 3–4 (Ch. 24–54)
Length: 2 volumes
- Red Ribbon Army Saga
Volumes 5–10 (Ch. 55–121)
Length: 6 volumes
- Fortuneteller Baba Saga
Volume 11 (Ch. 122–134)
Length: 1 volume
- 22nd Tenkaichi Budokai
Volumes 12–14 (Ch. 135–161)
Length: 2.5 volumes
- King Piccolo Saga
Volumes 14–16.5 (Ch. 162–194)
Length: 2.5 volumes
- 23rd Tenkaichi Budokai
Volumes 16.5–18 (Ch. 195–194)
Length: 2 volumes
DB Z
- Saiyan Saga
Volumes 17–21 (Ch. 195–241)
Length: 5 volumes
- Namek Saga
Volumes 21–29 (Ch. 242–329)
Length: 9 volumes
- Androids Saga
Volumes 30–42 (Ch. 330–420)
Length: 12 volumes
- Majin Buu Saga
Volumes 42–52 (Ch. 421–519)
Length: 10 volumes
One Piece, on the other hand, averages
10 volumes both
pre- and post-ts, with Thriller Bark being the second-shortest after Zou at 5 and Wano reaching
a whopping 16 volumes!!!, the equivalent all of DB from the start and until teenage Goku meets Piccolo at the tournament!
Saga----------------------------------------------------------------Volumes
East Blue
-----------------------------------------------------------1–12
(12)
Alabasta
----------------------------------------------------------12–23
(11)
Skypiea
------------------------------------------------------------24–32
(9)
Water 7
----------------------------------------------------------32–45
(13)
Thriller Bark
------------------------------------------------------46–50
(5)
Marineford
------------------------------------------------------50–61
(11)
FMI
---------------------------------------------------------------61–66
(6)
Punk Hazard
------------------------------------------------------66–70
(5)
Dressrosa
--------------------------------------------------------70–80
(11)
Zou
---------------------------------------------------------------80–82
(2)
Whole Cake
------------------------------------------------------82–90
(9)
Wano
----------------------------------------------------------90–105
(16)
Egghead
-------------------------------------------------------105-111
(7)