I would have to say that modal jazz is just as
complex
as
bebop, if not
more. While
bop solos
tend to be difficult phrases over quick chord
changes, good modal solos pile on layers of chords
over the base chord. Having tried both, it is a lot
easier to
fake your way through
bop changes than to
put together a
cogent modal solo.
This concludes my $0.02.