Croatia national team for 2 years now, has Champions League experience, 3rd place at the World Cup, was in the team of the year 2021, and IFFHS world team of the year 2022. Generally considered the best young CB in the world. No comparison, IMO.And Gvardiol is proven playing in the Bundesliga?
Colwill is good but he is no Gvardiol. He is yet to make an England cap, only 16 apps in the Premier League as well.