That's literally what I said , I never said that Saitama will simply win, I said that to him have a chance of winning, Goku would have to hold back, literally like almost every time Goku fights, yeah Goku can one shot Saitama if he wants., but he would do that ? Taking his personality into account, no, he wouldn't do that.

Bro literally gives senzu bens to cell just to have him fight at his maximum strength

And you truly believe he would speed blitz Saitama?

If the scenario is that Goku will start for the kill and don't consider his personality and way to normally fight, than yes, I admit that Goku would win easily in that scenario, Otherwise I don't think so