Absolutely. Especially when the fight was that close. Benitez's defence was superb and Leonard had a very hard time landing anything solid. The stoppage smelled.
Was Leonard ever deducted a point for that terrible headbutt? After that Benitez wasn't really the same, kept swiping at the blood as it went into his eyes.
I have often said in a high stakes title fight the ref should be drawn at random from a pool of a few select individuals. The stoppage in Leonard v Benitez was pre-mature.