WAC has considerably less information on the airport data. Notably it doesn't list the CTAF. It doesn't show the tiers of class B and C, just the overall dimensions. TRSAs aren't shown at all. It also omits the frequencies for the class C and TRSA facilities. Of course, the scale is twice as big.
I never bother with WACs.
Frankly, now that I've got foreflight, I never bother with paper charts period.
Frankly, now that I've got foreflight, I never bother with paper charts period.