see minato has some good jutsu((that we've seen)). oro has alot of jutsu we've seen so off that theres no way to correctly see a outcome to this. suicide is the only way for minato to make this a draw. but oro edo is earth base stated by muu as minato being lighting element he could stop it but for it being created by the 2nd hokage (mixed element user) it could be made up of other element. also alot of oro's move are earth or wind based and since minato lighting and wind based plus we dont know of any other moves then rasegan,space-time jutsus, and seals. making a fight off that little info is stupid but anyway oro would win cause we know more of his jutsus then minato's but on the other hand oro is alot older and lived long than minato therefore oro learned alot more jutsus then minato. but overall this is a incomplete fight to judge.