Aston said his side, whose only loss came at the hands of Papua New Guinea, had a hard time explaining why they were going home while Samoa would take on Australia for a place in the semi-finals.
"It's disappointing. It's something that probably needs looking at going forward because to win two of three, we probably deserved to go through," Aston said.
"That's how you judge it - go home and tell someone. How do you explain it? That's what we should focus attention on - how do you attract new fans?"
