What Did Chisora Do Wrong?

Chisora followed a puncher around without throwing.
Chisora didnt throw bodyshots and body-to-head combinations when he got close to Haye.
Chisora let Haye smother him and outwork him in clinches.
Chisora got frustrated and tried to slug it out, not realizing he has neither punching power nor speed.
Chisora got up from the knock down and began swinging wildly and blindly instead of smothering Haye and biding his time.
Summary -- Chisora was pretty dumb as a boxer to begin with.