This has always been a major issue with the DB manga compared to Toei's adaptations. Toei has had several different animation directors and scriptwriters throughout the franchise that decided to add supplementary alterations and some filler to makes things more entertaining:
- Tien's capture of King Piccolo failed in the manga because he didn't know that the cooker was broken, while in the anime King Piccolo distracted Tien with Drum in order to destroy the cooker
- Yamcha and Krillin's losses against opponents in the tournaments were quick in the manga, while in the anime their fights were more elaborate and longer in order to show they were improving as martial artists
- The post-namek cast rarely hung out together in the manga while the anime showed them growing closer and giving reasons why they tolerate each others' presence.
- The ToP filler gave use some stuff to look forward to by showing us different fighters, different universes, and different abilities, and even though they were hugely disappointing, at least it was more than the immediate start of the manga's ToP.
Toriyama and Toyotaro seemed to always not care about additional flavor and only wanted to progress the story. Which is odd, since the DB franchise has fairly simple stories and couldn't hurt from having additional content to flesh things out.