Some numbers:

College:

    30 weeks
    40 hours per week
    4 years
    = 4800 hours

Work:

    49 weeks
    50 hours per week
    2 years
    = 4900 hours

And that's being generous at only a 50 hour work week, as well as being generous in giving a full 40 hours worth of college work. I think your comment perfectly demonstrates my point.