The bot doesn't use Zombie Bears efficiently. There is some discussion about it in the Guides section on TarasBulba's 61+ WD Build.
In short, Bears can give greater DPS than Acid Cloud
if used correctly by DB, while using a Scrimshaw. You really need to strategically backup against walls to send a stream of bears at the enemy in a straight line. When this isn't an option, you need to position yourself so there aren't any obstacles between the launching point and the enemy while ensuring that your angle hits the maximum number of enemies.
The bot, however, will just get within range, then blow it's load of mana as quickly as possible. If you watch a single GRift, you will see lots of bears missing the target... Sometimes you will even catch the bot launching all of the bears directly into a wall. Not to mention that if you have any AOE avoidance settings on, the bot will continually re-position, and once outside of bears range, it is not doing any bear DPS.
Enter Acid Cloud. It's ranged so it can be caste while moving around far away and it also avoids the "line of sight" issues that Bears have. Couple that with 100% Damage and a free Lob Blob rune from SuWong Diviner, and it clearly beats bears.
As far a runes when using a SuWong, I would suggest Slow Burn. It's going to give the highest DPS of all the runes, regardless of what damage type you have stacked. I specify this because most helltooth builds stack fire (wall of death is primary damage dealer), and Slow Burn still works best.
For higher GRifts, I would again suggest reading Taras' Build thread:
https://www.thebuddyforum.com/demon...itch-doctor-gr61-season-4-100-unattended.html