Yes, that's part of it. But so's Bernoulli's principle. Some people (I'm not saying you're one of them) seem to believe that because the equal transit time explanation is wrong, Bernoulli's principle itself is wrong or doesn't apply to how wings generate
lift. But that's not true. Bernoulli's principle works and is part of how aircraft generate lift. It's
just the equal transit time part of the explanation that's wrong. What you're saying is also part of it, but not the only part. It's really quite complicated.
So the pressure difference comes from something else? Like turbulence under the wing?
Gah... I could look something up, but I'm supposed to be pretending to work.