Every number is Russ’s own rating out of 10. Russ has previously stated that he never scores in sponsored videos, so the food he reviews carries no applied pressure or bias.
He says it has slightly more flavour than the sausage roll flavour but is just salty tomato with a faint gravy aftertaste. He also questions why there is cheese powder in the ingredients. The 3.5/10 graphic matches what he says.