as of the new 52, all three of the past robins have gone through a slight change, weather mentally, physically, or just their costume. so the question comes who would win in an all out battle.
Nightwing(dick greyson) VS Red Hood(jason todd) VS Red Robin(tim drake)
standard new 52 gear for all three of them
they have standard morals on
they begin the battle with no prep time, in a city none of them have ever been to
they cannot team up with one another