nope the stats are just numbers the percentage that they actually tweak each modifier is so small (like 0.7%) that there basically is no adjustment made to the skill that the perk is supposed to assist i didn't do the research personally, but a guy on Youtube broke it down in a video. testing each stat versus each equipped variant that you can have. after watching his video i tweaked my numbers to test a few variants and i never moved any faster or slower, and was still killed by 1-3 shots depending on where they landed by multiple enemy types. NOW, if Bungie would go in there and actually add a whole percentage point that each stat could be adjusted by with each increase/decrease of the gradiant (1-10), you might see some effects taking place