I believe their strategy was to promite the idea that using weed is safer than using alcohol, not to mention the group's name is 'SAFER' (which I believe stands for 'Safer Alternative For Enjoyable Recreation). I'm not a big fan of the group or Tevert myself, so you won't find me defending them too much.
So the message is that Colorado is safer if people switch to marijuana, correct? Is there any evidence, any study, showing that alcohol users would stop using alcohol and switch to marijuana if it was legal? How can the proponents say Colorado will be safer? Actually, I've seen articles about users who end up using both, compounding the effects of each.
The strategy was to obfuscate, as they did in Denver. This time it didn't work.