The Frenchman became the first Everton player to score four goals in the top-flight at Goodison Park since Joe Royle 40 years ago in Saturday's 5-3 win over Blackpool - only the Toffees' sixth Barclays Premier League victory of the campaign.
But injuries have interrupted Saha's campaign, and Coleman said Everton could only imagine how much better their 30-point tally and 13th place would have been had Saha been fitter for longer.
"If we'd had a player of his class available every week of course it would have made a difference because you give him half a chance and he'll score a goal," said 22-year-old Coleman.
"But hopefully that win will give us a real confidence boost."
Source: PA
Source: PA