Kamui - space + time jutsu. But of different method.
Kamui jutsu belong to Obito Uchiha only.
1. Obito kamui need to touch on thing then work.
2. Obito failed to touch Naruto and Minato. (Raikage said he failed to touch both).
3. Obito kamui jutsu use whirlpool on any space (No need on the ground).
4. Obito kamui could make certain body to disappear to avoid unnecessary being attacked.
5. Obito could teleport himself to anywhere. (When zetsu told him when Sasuke vs Naruto after Sasuke vs Danzo).
6. With part of Hashimara' DNA and zetsu, give him some advantage.
11. Kakashi kamui required to focus on one point in space.
12. When he kamui Deidara one part of Deidara's body and it disappeared.
13. Kakashi chakra is limited.
14. Kakashi is not Uchiha, so weak and disadvantage.
3 = 11
4 = 12
Answer:
Obito >> Kakashi
Refer to Chapter 608 page 4. Obito got Kakashi.
Refer to Chapter 608 page 8. Kakashi kamui back to Naruto world.