How I argue with people about that statement is this: "If smoking marijuana is FIVE TIMES WORSE then cigarettes, and over 400,000 people die a year from tobacco in the United States. Where are the deaths caused from marijuana? I have heard of none. In fact have you ever even heard of someone dying from a marijuana related illness?"
So just by this observation alone it disproves that marijuana is worse than tobacco.

Heres something you may like to look at that i found off of yahoo.
# Over 438,000 Americans (18.1 percent of all deaths) die because of smoking each year. Secondhand smoke kills about 50,000 of them.

# 1.2 million people in China die because of smoking each year. That's 2,000 people a day.

# Tobacco use will kill 1 billion people in the 21st century if current smoking trends continue.

# Around 100 million people died because of tobacco use in the 20th century.

# 650,000 Europeans die each year from tobacco-related diseases, EU figures reveal.

# In Russia, smoking kills 300,000 Russians every year from smoking ailments.

How can you look at these figures and then still think marijuana is worse than tobacco. Hurray for media brainwashing....