I'm not sure if this is the poor jaw alignment you are referring to, but just in case you didn't know, cutters designed like those Kleins are usually supposed to have jaws that are slightly out of alignment with each other. One of the cutting blades is supposed to hit and travel slightly up the machined ramp of the other blade while cutting. It prevents the cutting edges from hitting each other directly and damaging each other, and that design helps reduce mechanical shock transfer into soldered joints etc. as the cut is completed. All my Xuron cutters are made this way, and Xuron cutters are commonly used throughout many industries. Xuron calls the feature "Micro shear bypass cutting". It looks like Klein might be calling it a "pinch-cutting feature" based on the Amazon description. Xuron might even be the OEM for those Kleins. All my cutters work great for the jobs they are designed to perform, like cutting small copper wires, flush cutting zip ties, etc. You might want to try cutting a few things first, to see how your cutters do before returning them.
I attached an explanation (from the Xuron website) which explains why they make their cutting edges the way they do.