I've been playing with Titanic Might for the last couple weeks, and i'm seeing improvements in my dps the more i get confident with the rage management without Deadly Calm.
It makes playing Arms much less dependenent on RNG, and it's even more fun to play because you know that you're dealing a good amount of damage even without procs, beacuse Colossus debuff lasts so much. Furthermore switching targets is actually possible if you play with Titanic Might.
Why is Deadly Calm still the talent of choice for so many people? Am i just unlucky to get so few Tactician procs while playing with it?