If you fail to use your CD for tankburst in Savage you will die. Having 100 more tenacity or less will not change that.
Meanwhile you will get higher damage using DH over tenacity.


tenacity and det can be usefull in ultimate for prog when you're learning where the damage spikes are and such but there too you will die if you fail to use your CD. When going for the kill it's best to use your BiS materies anyway.