Money Magazine: Highest Paid Jobs in US

The whole list can be found at Money Magazine, but for curiosity I noticed salaries for the following particular professions, with my comments:

Geological and petroleum technicians $52,516 =======> no comments
Engineer $76,100 ========> petroleum engr. are paid much higher
Software engineer $80,427 =======> over-paid
College professor $81,491
Market research analyst $82,317 ======> vs. financial sales agents who are paid $130,000+