by the Buu arc could defeat SS1 Goku from Namek. He's strong enough to at least put up a good fight though. As for Super, it's been stated that he's training again and that he's getting stronger, but there's no indication yet that he's gotten significantly stronger than he was in the Buu arc. At the very least, I'd argue that Krillin could maybe beat Trunks or Goten individually.