Here's something to keep in mind. Some would probably object to what I'm saying, but neither Injector Dynamics nor DeatschWerks "invent" or "design" injectors. They resell parts from Bosch, they pick stuff out of a catalog based on price, availability, and what they believe customer demands will be. Bosch is notorious as a fuel system supplier for poor service; I doubt they give these vendors the time of day to make custom spray patterns, not with such low volumes.
If you have two injectors of similar flow rates with a modern coil and valve design, the difference is probably the orifice plate. There are a huge number of factors in injector design, especially regarding the number and positioning of the holes in the orifice plate.
Translation: the vendor might have picked a spray pattern out of a catalog that happens to work better for the application. It could be pure coincidence. Flow matching is a marketing tool. It's not ONLY a marketing tool (I'm not saying it's pointless), but remember that Bosch, the ones who actually made the injectors, have their own quality control and production tolerances.