Some policies include accidental damage, others don't.
Some policies pay the cost of new replacement, others deduct wear and tear.
Some policies include garden furniture, tools, items in sheds and garages, others don't.
Some insure your personal possessions whilst you are out and about with them, others don't.
Some have big excess, others don't.
Some pay for replacement keys and locks, others don't.
And so on.
So you have to read the policies very carefully to make sure you are getting what you expect.