Is a kodiak bear stronger than a crocodile?

Depends. Depends on the species, age and sex of the croc in question, and the age and weight of the Kodiak bear in question. Kodiaks are the second largest species of bear in the world (polar bears are the largest), so they may be able to be stronger than a small or medium-sized croc, but not against a large salt-water croc or Nile croc.