Firstly don't go talking about "understanding" it when you don't even know what ____ing parallel means okay?
And even now, the second point still stands. Blending the Zephilin with the blue text would make sonic pretty much unreadable. Unless you are talking about something completely different, in which case I apologise.
And yet still, there is not TOO much deviation, and the only deviation points I notice are the ones I pointed out before. The only extra ones I see are making Overdrive the length of Sonic (which was actually pointed out before)and making the letters more spaced out; and the fact that there should be no actual background and that the b/g should only go in the text which wasn't even specified in your original post so how could he know? Plus he gave a logo without the background which had the semitransparented background in it. Problem?
Neither does anybody else apparently. Since you seem to want it to fit what you're thinking to the tee.
Sorry if I'm coming off as harsh or anything but really, the logo's good, it... pretty much meets what you're defining. I really don't see a problem, personally. Then again it's not what I say that counts so I might as well just shut up now. Which I think I might.