Same difference
Definition 1 of 1
Pro Tip 1/3Colloquially Casual
Use 'same difference' in informal conversations, not in formal writing or speeches. 
You can call it soccer or football, same difference.
Pro Tip 2/3No Math Involved
Don't confuse 'same difference' with mathematical contexts; it's about similarity in outcome. 
Whether they postponed or canceled the event, same difference to me.
Pro Tip 3/3Humorous Tone
Often carries a humorous or sarcastic undertone when minimizing distinctions. 
A cheap violin or an expensive one, for my playing, same difference!