Soward recently retired after a short stint with the London Broncos.
“The Super League players just aren’t good enough, to be honest. I don’t know if they train hard enough.
“And you saw in Wayne Bennett’s pressers – a lot of them just aren’t good enough.
“They don’t play the consistent footy week in, week out against quality sides, which is what we do in the NRL.”
Soward said he didn’t enjoy his recent spell with the Broncos, compared with his time with the club in Super League in 2013.
played for the Roosters, Dragons and Panthers, representing NSW in State of Origin.