Calling it nonsense doesn't change the fact.
Morceli was the undisputed king of the Mile in 91, 93 and 95. He run full seasons, was unbeaten, clearly dominated also the ranking lists in both 1500m and Mile and he destroyed the fields of all the best at the world champs. In 90 and 94 he was not as dominant, but still clearly the world no. 1. In 92 and 96 he was not dominant but still was able to set a wr and to win at the Olympics. Even in 97 he run almost as fast in the Mile as Coe's 2nd wr.
Coe without any doubt was not dominant in 80 and 84, even you want it to be like that. But he wasn't.
4th fastest in 80, 2nd fastest in 84. No serious Mile races. Ovett was in great shape in 80. The fastest of 84 went undefeated in a long season, but didn't compete at the Olympics. Impossible to call Coe dominant in these two years.
In 79 Coe was 0.08 seconds faster than Ovett in the 1500 (0.62 in the Mile), and Ovett just jogged in these years. They didn't race each other, so also here it's impossible to say Coe was dominant. In 81, in his best Mile-shape in the season, Coe probably was clearly better than Ovett. But since they havn't raced and Ovett has had an full season, was unbeaten and has run several super fast times, it's also strange to say Coe dominated the season. The best of Coe was better than the best of Ovett, yes.
And, no, even if you want it like this, Coe can't be ranked ahead of Morceli in an all-time ranking for the 1500m and Mile. The facts clearly say something different (Morceli's 25th fastest 1500 is faster than Coe's 2nd fastest, and so on...).
Coe throughout his career raced over both 800 and 1500/Mile, Morceli mostly concentrated on the 1500 (but sparingly also has had great success on longer events).
Coe clearly is the best complete middle distance runner in history. Looking only on the 1500/Mile, he is way behind Morceli and El Guerrouj. This is obvious and not debatable for objective observers.