Big3, he's not talking about "tuning". He's talking about the general aesthetic of the guitar solo (which I personally don't find very creative at all, to be honest, but that's by today's standards anyway).
By "general aesthetic", we're talking about the progression of each note played, the dynamic between each note, the bends, and the overall sound which consists of everything I just mentioned, and the tonality and feel of the sound, along with the creativity behind it. "tuning" would denote specifically the tension of each string and which frequencies they resonate in relation to the other strings.
So he's talking about the whole picture. For example, if you liked the sound of the second movement of Beethoven's 7th symphony, you would not be referring to the way the strings are tuned. Well, maybe you would, but the point here is that blastingas is not.
