All teams in the group are very irregular if you think about it. Sweden lost against Germany due to that lackluster 2nd half and Mexico offered a very good game against them, while South Korea could've offered a much better role, they showed it against both Sweden and Mexico, but ultimately lost both matches. Mexican commentators mentioned at the end of today's game that Sweden is "Champion material", but I think it isn't, that is, if they play in the next round like they did against South Korea and Germany.
Sweden lost to Germany. C'mon!
But they defeated Mexico and quite overwhelmingly. If they played like that for the rest of the tournament, they could go very, very far.