Different era in which he competed in so it's a bit unfair to compare. Keep this in mind. When Rodgers was at his best the standard by which one measured a great marathoner was if he could average 5 min miles. For today's standards that's like 4:50 pace. In Rodgers era avg. 4:55 pace is like today's 4:45 pace. Basically we have seen a 15 second per mile increase in the avg. pace of a marathon over the last 30-35 years. To answer your question, it depends on the marathon. Let's look at the major marathons and see where Rodgers would place today based on his PR of 2:09:27.
Boston: Top 10 yes, Top 5 maybe on some years, winning still possible.
London: Top 5, no, Top 10, maybe, winning, NO.
Berlin: Top 5 no, Top 10 yes, winning no.
Chicago: Top 5 maybe, Top 10 yes, winning no unles there was a massive heat wave in which he would most likely DNF as Rodgers never raced well in the heat.
NYC: Top 10, Yes, Top 5 Yes, Winning yes on some years.
Basically rodgers would in most cases be in the top 10 in the majors he just would not be winning a majority of them. In a lot of ways he is like Meb. If Meb were running during rodgers era meb would have a lot more wins than he does now.