I'm not sure actually. Never did a a lot of research into them if I'm honest. All I can remember finding out is they're both apparently forged rather than cast. Younstill see the forge marks on the h&b vs 2hawks grinding them off. I still have my voyager from 2hawks (might pick up that little nessmuk double bit they sell to try it out).
Im not sure on the age of my H&B Boys Hawk being before Jerrod took over or anything but it's a solid little piece. They have very good edges. I have processed an entire 12 ft log down into kindling with it and a Gransfors Double Bit. It did the the job very efficiently and only required a stopping after. They put a nice convex on it so it takes some punishment.
Looks just like this one
https://hbforge.com/throwing-tomahawk/boys-throwing-hawk/ .. I'm not saying the 2hawks is really any worse off. I've used it to process a lot of wood.. I just had a burnt edge on arrival (once I sharpened it down to good steel it was fine, and its made of 6150 iirc).. it's just my subjective opinion that these H&B's are better as it arrived faster, ready to work, cheaper, made trationally with a bit, and also look more traditionalas well. Those are essentially why I tend to like it more.
I also plan to pick one up from Lisa at Wolf Creek Forge at some point. I hear they're making amazing hawks. I want a nice example of one of each of the nice Hawk brands to test out head to head.
That's being said you wouldn't be in a bad spit picking up a voyager or longhunter from 2hawks either.
Just some thoughts on it.. yymv. Thanks for reading