50K a year according to SSH?

[ECAF REKOP]

According to Small Stakes Hold'em a "very good" full time 3-6 online player can be making 50K a year. If someone could just clarify the true expectation. Is it safe to assume a full time player plays 3 screens (3-6 limit) at one time and avg 1.5 BB per hour per table. That would be $9 an hour X 3 games at once or $27 an hour, which is about $54K a year. Is this what SSH is impling? Can you make 1.5 BB per table playing 3 table at one time? I can not see how else one could make 50K a year playing less than 3 tables of 3-6 online. Am I way off base here?

I look forward to the responses!