Not quite bc whomever wrote that doesn't understand the limitations of EMG research. You can have higher EMG readings with a maximal isometric hold on any lift vs let's say 75% of your max on the same lift through an entire range of motion. Point being, EMG readings are not the be all end all of hypertrophy. TUT, ROM, etc play significant roles and you can't throw them out solely to favor EMG. Coincidentally, decline press has a shorter ROM, and thus shorter TUT given the same parameters, than either flat or incline.