Kane was 20, whilst Eriksen was 21, neither had barely played PL football when Sherwood took charge. It was a massively different team and more importantly a settled one given the massively player turnover the summer of 2013 and with the removal of the likes of Adebayor and Kaboul as well as dross like Paulinho, Soldaldo.
Just look at the difference between Poch’s first season with Vertonghen and Fazio in defence and Mason and Bentaleb in midfield compared to the next season with Vertonghen and Alderwield in defence and Dier and Dembele in midfield. You could also compare Chadli with Ali.
Same manager in each season and yet there was was a world of difference in the results and performances. That says it all.
Yeh it says he made the players play better which he did, he got them fitter and those that didn’t want to follow he sold. Poch was not handed the Real Madrid’s squad after he came in.