I think we simply have to leave the finer calculations to the voters: The basic question is simple: Which team is the best remake. If you, as a voter, think they're equally well/poorly re-created, you have to either call it a draw (as you normally would in a draft), or come up with a deciding factor of some kind.
Personally, I would look at individual quality – but not in the sense you suggest. I'd look at the different roles and to what extent the managers have succeeded in replicating (and perhaps even upgraded on) the individual quality of the original players.
To use a variation on your example, I'd look at the players who actually play the Pelé and Vieri roles: How close is the player in the former role to Pelé? He'll be below that level in all likelihood, but how far below? And the same for the Vieri role: Here the manager may have drafted a player who is closer to the original's level – but given that this level is lower than Pelé's to begin with, you have to factor that in...and so forth.