Facts : 1.Dire Beast provides more burst in a 20 seconds window.
2. TOTH will provide more damage in a 30 second window.
3. W/ barrage being in the meta you losing a lot of TOTH procs you were getting w/ glaive
Conclusion : I could see TOTH being 100% better is HLS where instead of setting up burst every 30 seconds you are more going for long term steady damage. Aswell as TOTH is amazing for killing totems against resto shaman teams.
Feel free to share your opinions on the ability's!