Agreed, there was supposed to be more to my original post. My point was supposed to be that they are the same. For my SSD, I am supposed to be getting read speeds of 300+ MB/s over sata III, after trying several things and having them not work, someone told me to switch cables to the ones that say sata 6Gb/s on them and it will fix my problem. As you can see, it didn't do anything for read speeds and I am pretty sure the difference in write speeds was from some other setting that I messed with.
I say if you have sata III cables, use them. If you don't have them, I certainly would not go out of my way to obtain any.
You have problems elsewhere.