I don't have any of the technical info that you've asked for, but ...
I have a S&N Penobscot Bay Kindling axe, which has the very same head as the Hudson Bay Camping axe - just a shorter 18" handle rather than the 24" handle.
The blade is great, though I did have to do a little reshaping with a file and then a puck sharpener. Great for cutting and chopping.
I haven't had a chance to use it yet (very busy few months), but I struggle with the idea of splitting wood with this Hudson Bay style head. The reason is because it seems that the handle just below the head will get in the way when splitting. I've searched on the web for info on this issue, but haven't found anything about it.
I'd purchased the Penobscot axe in a kit with a small 3 lb "Mini Mall". I really like the little maul. Again, high quality. I didn't worry about the Penobscot axe shape too much since I figured I'd be splitting smallish wood with the maul instead of the axe.
Last week I purchased S&N's "Our Best" 3.5 lb 30" axe, and really REALLY like it. Again, I did a little sharpening with a file and sharpening puck first, but this is one really nice axe. The head is shaped more like the Hudson Bay axe than a wedge-shape - fairly narrow at the blade and then curving out to the handle. I like that shape.
The handle on the Penobscot axe is high quality, but a tad bit rotated from the preferred grain orientation. For a short-handled axe I'm OK with that.
The handle of the 3.5 lb axe is just as high quality wood, but this one is dead-on straight - just what I would have expected. I was hoping for that with the longer-handled axe.
If I could only have one ... I'd recommend the "Our Best" 3.5 lb head axe. Very nice! I suspect the smaller 2.25 lb 28" "Our Best" axe would be just as nice.