I think they have a chance on M! Countdown, they debuted at #4 last week. But Shinhwa's Venus debuted at #3 last week and received over 60% of the global votes this week, while Sherlock had 16% and CNBLUE, 9%. All the others got 3% or less.
40% Digital single sales: Busker Busker>CNBLUE>SHINee>Shinhwa
10% Album sales: SHINee>>CNBLUE>Busker Busker>>>>Shinhwa
15% Global Fan Vote: Shinhwa>>>>SHINee>>>CNBLUE>>>>>>Busker Busker
10% Preferences of music experts: No idea what's gonna happen
5% Live Show Preferences: I have no idea either, but I think Busker Busker will get less points from here than the others.
5% Real-time charts: Busker Busker>Shinhwa>>>>>>>>CNBLUE>SHINee
10% SMS Vote: IDK, but considering the fanbases, I think SHINee>>>Shinhwa = CNBLUE>Busker Busker.