West Ham United boss David Moyes will take charge for the first time at the weekend.
Sullivan raised eye brows when he publicly admitted that he had taken a gamble by appointing Moyes as manager of West Ham.
The co-owner was criticised by some sections of the media for putting further pressure on a manager who is already under a heavy amount of scrutiny.
But Ruddock, who does not believe Moyes should be in charge at West Ham, believes that Sullivan was only telling the truth.
“With Moyes I just envisioned him sitting on the bench at Sunderland, and he looked a broken man,” Ruddock said.
“I want him to dwell at West Ham and prove a point, as he’s a good manager, but I just see him sitting there.
“I would have gone for Chris Hughton, you can pay £20 million on midfielders who weren’t good enough, and they won’t spend £5 million on the manager.
“I think this is a gamble. It’s the most sensible thing he [David Sullivan] has ever said!”
Moyes’ appointment at the London Stadium has not gone down well with supporters of the London club, who fear he is the wrong man for the job.
Moyes has failed in his last three managerial posts – at Manchester United, Real Sociedad and Sunderland – and his reputation has taken a battering.
The Scot now has a point to prove at the London Stadium, as West Ham look to escape trouble.
West Ham are currently in the Premier League relegation zone, after a terrible start to the new campaign.
Moyes will take charge of West Ham for the first time at the weekend, when his new side take on Watford at Vicarage Road.
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