Thank you for posting the 2004 schedule. Using that and your prior posts, I have a sense of the games/competition. In Spring Training, the MLB teams only use designations of Low A to AAA. Low A is the players from the Rookie leagues the prior year, who were lower round picks or free agents, mixed with some very young Latin players.
Either the Phillies, Mets, etc split a squad of those players or played a game with that type of squad.
What you also need to know is that, unfortunately, most of the non Latin players from those Low A teams in Spring Training either get released the first week in April or by June following the draft. Those games would not be played against minor leaguers who get an assignment in April and play either High or Low A Ball for the next 144 games. If your impression is that those games are reflective of the level of play in the minor leagues, you could be making an enormous mistake. What you watched was a group of players who had huge dreams that didn't last more than a few more weeks, in many instances.