Machete, axe, saw. Each has serious pro and serious con.
My usual combo is a thin bladed machete and a bow saw; for the weight there is no equal in softwoods. I have done the tomahawk, but it is a fail for most serious use, even after I put a decently long handle on it. An axe is great, but comes with a weight penalty, and often does not split wood well if it is light enough to pack. The machete cuts poorly compared to an axe, but limbs far better and weighs 1/2 as much.
If only taking one tool, I take a machete when above freezing. If down close to zero an axe and a saw. A big knife weighs the same as a thin machete, but only does 1/3 as much work with the same effort, though it does baton split wood easier. I am only in softwoods, which can make a difference.
Also, you need to spell out the weight you can pack, and what you are trying to accomplish. A 3lb axe can do much, but you won't want it on a backpacking trip for making a tiny fire for coffee. Likewise, a small folding saw can be 6 oz, but would be almost useless for a wintertime bugout bag.
If you come up with any answer other than a thin-bladed machete and a bow saw, it is wrong...