OK bro, I know you read a lot of research and look into all of this stuff but you have to realize that most of what you're reading is written by the companies that are trying to sell the stuff to you. Even the studies that they publish are done by the companies themselves. Trust me use the creatine you have, if it doesn't feel like it's doing much for you, stop using it for a few weeks and then start a new loading cycle and start it again. The other reason you're probably not feeling much from it is because for one thing it doesn't do very much to begin with and some people just don't respond to it at all because their bodies are already absorbing creatine from the foods they eat and the extra creatine will not do anything to help.
If I remember correctly I read an independant university study that showed creatine helped 100 weightlifters lift an average of .63 reps more than non creatine users...
That's POINT .63 so that means if you can knock out 10 reps with a weight when you use creatine you can knock out a whole half rep more