When you hear "rum and...." what brand do you think of? Coke right? Never once have you heard someone say "I'll take a rum and Pepsi" that's psycho shit.
When it comes to trading, for us, it's much easier to trade the Cokes of the world (the leaders). We would rather pay up and hit singles, doubles, and triples while the others keep swinging for the fence buying the laggards (the Pepsi's) and continue to strike out