Argentina are currently in their best form in the last ten years, and the reigning world champions. I think that if Messi plays, he will definitely score his goal. The status of reigning champions obliges them to win by a large margin.
All the statistics indicate that Boca Juniors W will score, the away team is simply stronger in every respect, but because Internacional W are playing at home, the bookmakers make them the favorites; they should easily go over Total 2.5.