Goku as a coach wouldn't matter he doesn't know anybody on his team, thats a huge advantage. Superman knows his team inside and out. Whatever plan team anime would come up with would be snuffed out by MM's psychic powers. They take out Sailor Moon first, due to her abilities she would be the toughest one to deal with. Lupin and Harlock then get taken out, they are just humans with no real ability an onslaught from WW GL MM or Flash.
Yep, we have 3 superman-level fighters(MM, Wonderwoman and Supes) and one almost approaching it(Flash) and someone occasionally being above that(Green lantern). Or perhaps was it just the animated series? If so then Flash can only go FTL by risking his life and Superman has no planetbusting feats. That puts JLA on a seriously lower level. Probably it would get a stomp the other way around.:p
@SSJjanemba: The comic book version has an advantage though. They have Wonder Woman who is physically comparable to Superman, Superman himself, Martian Manhunter who is another Superman-like character in terms of physical power and has hax mental powers that he has used to detain a rampaging nigh-omnipotent human, The Flash who is massively FTL and has harmed the likes of Superboy Prime, Green Lantern who is a dangerous matter manipulator and sometimes is shown to be superior to even Superman in terms of power, Batman a master prep user but still a human (physically) and Hawkgirl. Not to mention that they all know each other and would work much better as a team than the Anime JLA who don't even know each other at all.
@SSJjanemba: Well not only SPB but he has harmed Superman too. Physically he is a human yes but the Speed Force protects him from the effects that would happen to a human punching massively FTL (which has a lot of mass).