Gutter Boy
Tim Sherwood
The "younger competitor" in that case had also done it in the PL at that stage. Scott hasn't and Maddison has shown he is a top-level player in the PL.
Bellingham hasn't and Giggs was still in the youth team (Walker versus Naughton is another example too), but I get the point.
I actually see Maddison more as a David Bentley or a Ross Barkley. He's done the big fish in a small pond mid-table thing (and for a very long time now), but I just don't think he has the character to step into a top 6 club.