foreman beat noone at all, he was a gold medallist with a high ko percentage meant to be an easy fight. I rate his pre title run and he has some decent wins overall but he is not a top ten atg.
For every "unkind" report of him during that time, there are also much more favorable reports. Virtually every account of his fight with Moran praised his performance in a fast-paced fight. The Miami News clip explicitly says that he appears to be "much better than formerly." His record shows that he scored the biggest wins of his career in the year or so prior to fighting Dempsey - Moran, Fulton, Levinsky, Smith. Two of the fighters you criticize him for losing to (McMahon and Coffey) had also beaten him during his supposed "heyday" in the White Hope era. I've shown you reports that explicitly describe him as "the fastest of all big fellows."