The point is they were impactful in most of the matches, while Kjaerbye was impactful in just one, other games we carried by Device. VP wouldn't get out of group stage without his clutches so thats huge impact. Similar thing is with Device. As it's MVP of tournament, tournament performance should matter, and Kjaer should get match MVP.
I got the point that Kjaer performance decided about winning major, but Device gave his team this opportunity by being beast in semis and before. Like with golden shoe, if someone was shooting goals like mad for whole season, why winner of champions league should get it? MVP picked from pool of semi-finalists would be fair enough.