Yes, but I'm not sure on what data this supposition is based. Was meant more as an invitation for you to expand on why "complexity" might be the most likely reason for failure.
The failure of the Nazi invasion of Russia (Soviet Union, whatever) is attributed, by some, to logistics.
Whether or not this failure should be binned in a bucket labeled "failed due to complexity" might be debatable. I'm unsure if the bucket labeled "failed due to execution" would be a good fit, more likely it was doomed to failure before it began from poor planning and preparation. Might they have succeeded if they had waited for better weather could be a question worth exploring.