It is an odd comparison to make. Meb is primarily a road racer/marathoner. Pre was a track runner.
At the time of his death, he held American records in all raced distances between 2000m and 10,000m; that includes english distances as well as metric. His ARs compared pretty well to WRs and would be among the best times of the year. He also could run world class mile races.
Meb held only one AR. His marathon wins are very opportunistic. They come on tough courses that play to his strengths. Or an Olympic marathon when Kenya can only send 3 runners to compete. When he was on the track, he was buried in world championship or Olympic fields.
It would appear that the only basis to rank Meb ahead of Pre is upon the big win races and an Olympic medal. I tend to be skeptical of the "big game" emphasis that I see in sports arguments. Using a metaphor,If the big win is so important, Trent Dilfer should be in Canton instead of Dan Marino.