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cloudsurfer is 100% correct. the cams with the single notches are the intake cams. their timing is set relative to the exhaust cams, and is done so at the factory. it is not possible to alter the baseline timing between intake & exhaust cams without physically removing the camshafts from the head.
variocam, of course, DOES alter the timing between the two ('overlap'). we are only using the single notch to determine whether we are on the compression stroke or the exhaust stroke when we set TDC. we are checking that it's pointing ROUGLY outward (compression) or ROUGHLY inward (exhaust).
in fact, even the factory shop manual shows it pointing a bit upward as you describe:
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