This thread has turned into the Clone/Drone wars and the drone is getting it’s ass kicked. But I’m not going to pile on just yet. Instead I’ll share my weird perspective first. 
I don’t like pets in general and I specifically don’t like pets that do all the damage. Maybe it’s an ego thing but I want to do all the murdering myself
. But given how much I
Zane I’ve had to reconcile the fact that he has not 1 but 2 pets! Fortunately, neither of them are particular powerful out of the box, which suits me fine. The clone is kind of an exception because you can do plenty of builds where it kills all the things! But that’s a choice that you the player get to make and not making that choice is equally viable and powerful.
[A brief aside]
The last sentence of the previous paragraph is yet another example of Zane’s flexibility and diversity. He really is the best designed character in the game. But I digress. Where I’m going with all this is the following.
The ingenuity of Zane’s pet interactions (one of many) is his skill Synchronicity. What I really like about that skill is it powers up the player for using the pets in the first place. So regardless of whether the pets themselves are powerful, you the player are made more powerful by their presence. I find that interaction quite innovative even though it’s not new (i.e., BL2 Axton’s Battlefront skill). Granted, I think Synchronicity should be increased to at least 25% per and maybe even as high as 35% per. But the specific percentage isn’t really the point.
Now that I’ve expressed my weird ideas about pets let me jump knee deep into the clone vs drone war that’s being waged on this thread.
It seems perfectly reasonable to me that the drone is soooo much weaker than the clone. And here is why. The clone takes more work to manage because a)it can’t move and b)you can’t direct it (i.e, tell it what to shoot). So as a reward for making you work harder it can be made more powerful (i.e, Boom Enhance and Double Barrel) and you too can be more powerful (i.e., increased damage after swapping from Double Barrel and anointments).
The drone on the other hand is a fire and forget pet. No micro management is required and therefore it has to be weaker than the clone. And not just by a little but by a lot because if it was nearly as powerful as or more powerful than the clone then there would never be a reason to pick the clone over the drone, outside of personal taste (which btw is a totally legit reason). That said, I think the drone’s base damage and augments do need serious buffs to keep pace with enemy scaling in TVHM/M3.
I have the feeling that the pets in the game have been balanced around normal mode. Because it’s painfully obvious how lackluster, with some exceptions of course, they perform out the box in TVHM/M3. And to be fair, GBX has recognized their under performance and have gone on record as saying it’s something they are looking at. I’m going to hope they get it right and if they don’t, I feel like some of the minds (not the whining snowflakes though!) on these forum will provide some good feedback that will help get at least Zane’s pets in the right direction.