I was 17-18 during those two Malone MVPs. I love Larry, but those two years, Malone was a much bigger difference maker on his team as well as through the year in the league.
No TS%, WS, RPM, BPM, PER, etc existed back then. You watched the game and got the raw box scores. Going off what I saw of Moses during that time(because, remember, there was no ESPN for highlights or League Pass to watch any game you want or NBA Network to discuss and watch ball or ESPN or TNT putting on multiple national games of the week, so you got to see players much less) he was more deserving of the MVP than Bird was. Heck, even in 80-81, Moses probably deserved it that year too, over Dr. J.