Leveling a DK through tanking.

[Genooo]

What should I use? 2h or DW blood?

[Threash]

Do you see any DW talents in the blood tree?

[Zao]

TO elaborate a bit more:
2H is superior to DW blood. The only exception would be if you had way better one-handers than two handers.

[Darkguyver2020]

I'm sad to say that DW Blood tanking is dead. Your only option is a 2 Hander.

[OnlineSamantha]

Indeed you should be using a 2-handed weapon.