A commonly stated argument by those who wish to raise traditional hearsay/ahadith to divine-status level is that its compilation was the same as The Quran.
Is that really true? Lets look at the simple and obvious facts...
The Quran = God's Word
Ahadith = man's word
The Quran = 100% fact/truth/perfect
Ahadith = mix of truth and falsehood (hence weak and strong hadith)
The Quran = recorded under the DIRECT supervision of prophet Muhammad
Ahadith = not recorded under the DIRECT supervision of prophet Muhammad
The Quran = written AND memorised word for word as soon as it was transmitted
Ahadith = no-one ever claimed to record and memorise ahadith word for word as soon as it was transmitted
The Quran = protected explicitly by God Himself as stated in The Quran
Ahadith = no such explicit protection stated
The Quran = no Muslim doubts its credibility
Ahadith = each sect has its own versions, weak & strong ones etc
The Quran = in-built verification mechanism, e.g. challenges others to find inconsistancy, bring a chapter like it etc.
Ahadith = no such in-built mechanism, full of inconsistancies etc.