The people of Nineveh believed God; and they proclaimed a fast, and put on sackcloth, from the greatest of them even to the least of them.
Of course, this was a far greater wonder for the Pharisees, and all mankind, than the wonder of Jonah's deliverance.  Furthermore, the Pharisees would have a much closer view of the wonder than that which was accorded the Ninevites, whose belief, at best rested upon tenuous and uncertain testimony; but the Pharisees themselves had witnessed the crucifixion, procured the guard at the grave, and instigated the action that sealed it.  Yes indeed, the Lord was more than fair with them.