Tough to say since Tagovailoa never played last season and Joe Burrow did and had the football year of his life leading his LSU Tigers to a National Championship with 60 passing touchdowns and a Heisman Trophy, the Walter Camp and Maxwell Awards plus so many more.
Also, consider the size of the two prospects – Tagovailoa is 6’ even whereas Burrow is four inches taller at 6’4” but weighs the same at 217-pounds, so Burrow is a better height for the league but who knows if his body can take the abuse of the NFL the way Tagovailoa’s stockier body might.
But even if you compare Tagovailoa in 2017 or 20188 against Burrow’s 2019 and decided the seasons were about similar, when you add in the fact that Tagovailoa was injured twice and Burrow has remained healthy throughout his time at LSU, Burrow looks better every time.