TBF if you compare the debut of both players then Rashford takes the cake easily. He debuted in kinda a worse and more disjointed team and had a dream debut in both EL and PL. Greenwood might become better than him eventually but the guy has a point in telling you to remember Rashford's debut.
I’m not disputing it, his debut week, even for country was dream stuff. However he has regressed in my eyes every year since then and I don’t rate him. Sorry but it’s my opinion and I’m comfortable with it.