...are left and right clicking the same control-click animal?
No. Right-clicking ("secondary clicking") is the functional equivalent of control-clicking. Left-clicking is, well, clicking.
We're getting way beyond the topic of this thread, but the point is this: though Jon's reference to right and left trackpad buttons was
literally inaccurate, his point was correct. Right and left "mouse button"
functionality is available on glass trackpad MacBooks and MacBook Pros.
The article I linked to doesn't explicitly refer to "left-clicking" (no doubt a Jobsian linguistic touch to uphold the historical correctness of the single-button mouse), but it clearly equates right-clicking with "secondary clicking," strongly implying that left-clicking would correspond to
primary clicking...as in fact it has for many years in the non-Jobsian linguistic realm.