The one with the spear is much stronger. You can try to use the prop to chop and poke the target, and count the number of hits in one minute. A broadsword is meant to be swung, but a brief stab from a spear can do enough damage. Even if the two weapons are the same length, the spear has a much greater chance of winning.
However, the machete has a strong damage effect and can cut people into pieces with missing arms and legs, but what's the point? A few penetrating wounds the size of small wine glasses are not fatal enough?