I have played both many times and agree Pasa is on more convoluted terrain with resulting wilder greens.
However, don't underestimate the slopes at the Valley Club. Mackenzie picked most green sites where there are strong slopes, and Hunter did little to mitigate the degree of these slopes. #2, 3, 5, 7, 8, 9, 10, 11, 12, 15, 16, and 18 all have sloping greens, mostly in one direction, back to front, that can cause heartburn all day. Think about #8 at Pasatiempo; most of the ones listed above are in the same degree of difficulty.