Eeveelution can do fast damage but more than 70 or somethin
Ludicargo can do 110 damage fast with a good setup, it can take down any deck with the right tech
Metanite can do serious damage if you have enough energy
Ludicargo is all-around a better deck than both, but if those three were to battle it out, I'd say Metanite would come out on top(simple because of matchups against the other 2).
i'd say Eeeveelutions. they can own both decks by weakness and the right build with surprise time machine would eat both deck... just me though i'd say Shiftry FTW....
metinite because you can do massive damage then get the energies back or you can do little damage so it is flexable with cargo and metagross and holon ruins you can really abuse the ability to get cards out fast.