Would USS Johnston have changed the Glorious battle?

Would USS Johnston have changed the outcome of the Glorious engagement?

Probably not: Johnston would fight hard, but one destroyer would probably still be sunk without overturning the result.

A lone USS Johnston would probably still be sunk, and the German ships would probably survive. The comparison is with adding a single Tribal-class destroyer: a formidable opponent, but insufficient by itself to reverse the battle. Johnston could make the fight harder without changing its outcome.