Also Sukuna took Megumis body because Yujis was fighting him/preventing him from using his full power whereas Megumis is more malleable, 10s is but a bonus but the real reason was what I stated. So dont bring out him requiring his tech.
This is only partially true:
- Yuji prevented him from taking over his body, but once taken over Sukuna could use the full extent pf his abilities relative to the number of fingers Yuji had consumed up until that moment
- Megumi on the other hand factually prevented Sukuna from using tge full extent of his CT against Maki and Yuji. Something Yuji never did.
- Sukuna took over Megumi's body in bigger part because of the 10S, whose development and potential Sukuna noticed and oversaw for dozens of chapters (e.g. Megumi's first domain, which Sukuna perceived through the finger of the Finger Bearer)