Sasuke's Curse Seal vs Boruto's Karma Seal

Sasuke's Curse Seal by Orochimaru is same As Boruto's Karma Seal by Momoshiki

Remember when Sasuke was fighting against Itachi. Itachi makes Sasuke to consumed all of his chakra. This is when curse seal true nature came in front of us. Curse Seals purpose is Hostile Take-over of hosts body. So its like injecting sperm, and make the Sperm grow by absorbing hosts chakra. When Host is completely out of Chakra or energy, His body is Mutated with Sperms injected. 

Its like Snake Bite. So the mark is always there. The mark(Karma Seal or Curse mark) has stored elements/memory of the ejector. The elements of the ejector acts as last supply of energy.When this store of energy is used by host, the ejector sperm(having memory) spreads all over the host body beginning of hostile take-over.

When the Absorbing of the Chakra is at an extent that the ejector's sperms are totally grown into ejector. We can see how Orochimaru came out of Sasuke during Sasuke vs Itachi fight. Though Itachi seals Orochimaru, hence less known weather that orochimaru version was able to use Sasuke's ability of Sharingan. As he (orochimaru) always conspired for Uchhiha clans biggest gift : Sharingan. 

Orochimaru has gone ways to find Kaguya Clans Secrets !!. He may have discovered the secrets of Karma Seal and its ability to sow one's own chakra and grow from it using the hosts chakra. They need to find stronger host to have owns own seed the powers which are invincible in fight.

Remember Kimimaro who was test subject of Orochimaru. He hailed form Kaguya clan. It would be interesting to Know what role Orochimaru plays in Boruto Manga in reveling Karma Secrets.

Surely Boruto's abilities of Karma are far more invincible than Sasuke Curse Seal. The ability also grants host to use this supply. While for Sasuke, using curse seal made him fully drained out of chakra, but for Boruto, it seems he can use it without draining his chakra. It seems ototsuki grants the host the power of this stored supply, just like tailed beast inside host. So orochimaru's curse seal was not at the peak. It had some flaws. 

In a scene of Jigen vs Naruto vs Sasuke, its the otutsuki (Kaguya partner as identified by Sasuke) who is now in control of Jigen. Jigen's body is not able to withstand Sasuke's and Naruto's attacks. He says he needs Kawaki's Body now. So having a body which can withstand huge chakra and heal itself is important. Boruto being half Uzumaki and Hyuga has Strength and self healing abilities which makes him best host. Looking forward for Future Boruto Episodes.