People throw around the word "symmetrical" a lot in bodybuilding discussions, so I think it's about time we clarify what meaning we intend to convey with that word. If we mean it in the strict/mathematical sense, then we are referring to sameness on opposite sides of a line. It seems to me that nearly every IFBB pro possesses this sort of symmetry, when the line in question bisects their body vertically. That is, most pros' left and right sides are identical. Phil doesn't possess greater symmetry in this sense than other top pros, especially Kai, whose left/right symmetry seems top notch to me. In fact, Phil's ever expanding left arm throws off his left/right symmetry.
The less technical sense of symmetry is fairly synonymous with the meaning of "proportionate." "Symmetrical" in an everyday sense means something like "harmonious" or "balanced." This is a more subjective notion, and I expect it's what people usually mean when they talk about symmetry in the context of bodybuilding.
So, I'm curious how you forum posters use the term. If you use it in the less technical/mathematical sense, then why distinguish symmetry from proportion, since the two mean the same thing when the former is used in the everyday sense...