Kings fans chant "Go Kings go" while Rangers fans chant "Let's go Rangers." Spurs fans chant "Go Spurs go" while Heat fans chant "Let's go Heat." Do you see a pattern here? Would some indisputable science data help? Have a look:
As you can see, teams whose fans chant "Go [team] go" win 2014 championships 100 percent of the time while teams whose fans chant "Let's go [team]" win 2014 championships 0 percent of the time. If you want to win a championship, chant "Go [your team] go." Can't argue with data.