If Grade 3 = 10x SSJ1 (which makes sense bc Goku went from android level to Semi Cell level with it), then I imagine Trunks would wipe the floor with Cell.
A x1.33 gap. It’s implied to be smaller than #19 VS Vegeta or Semi Perfect Cell VS Vegeta, but larger than Initial Imperfect Cell VS Piccolo or #20 VS Piccolo.