Colak always scored barrel loads in a 4-4-2, he needed that supporting striker, think Boyd and Miller, I doubt Boyd would have been as prolific as a lone striker, they were both penalty box strikers that needed a strike partner.
I remember I did a deep dive on Colak at previous teams, he had an amazing few seasons at Malmo in a 4-4-2 then a shite season in Greece in a 4-3-3. Then we signed him to play in a 4-3-3.
I can't be arsed researching Dessers and my mental health will thank me.