It is, but Balogun has proven himself to be way too good at those levels, where as Coburn has done well at U23 and not played for England U21.
sTyle of play is important too. Coburn likes to stay off the ball and let his movement in teh box create chances. He isn't a close down type, and isn't quite strong enouhg yet for his hold up and give and go to develop....it will but he needs to phsyically mature.
Balogun looks a man already, moves as fast with the ball as without it, outmuscles players, looks to get on the ball and run at teams with pace and power. He is better suited right now, but Coburn if he continues in 18 months would be the perfect type to play alongside him.