I'm going to go ahead and add these scores (1 & 2) as they are indeed the two best ever. And I'll also add my MAME score as it's a tad bit higher than my arcade score. I'm also going to add another two arcade scores as they may be needed for now until they are topped. Some may be missing since I don't have the TG database to look at and ChamPOW is missing scores.
I guess we are going with the highest score a person has made between arcade and MAME.
1) Tom Votava 4,678,440 Arcade (a score that very well may never be beat)
2) Perry Rodgers 3,481,550 Arcade ( Legendary score from back in the day that I respect very much)
3) Stephen Boyer 2,285,280 MAME http://replay.marpirc.net/inp/b/4/a/rip_marioo_2285280_wolf106.zip
4) Mauro Ruozi 1,376,000 Arcade
5) Spencer Oueren 1,202,210 Arcade