I have looked up all the stats for you guys to help you settle the argument
1: Everton - CF - 67 Mins
2: Fulham - Wing - Came on for last 23 mins
3: Southampton - CF - Played 70 mins
4: Wigan - CF moved to wing after 70 - Played 90
5: Galatasary - CF - Played 10 mins
6: Liverpool - CF - Played 5 mins
7: Newcastle - Wing moved to CF on 70 - Played 90
8: Tottenham - Wing - Played 15 mins
9: Cluj - CF - Played 10 mins
10: Newcastle - Wing - 90 Mins
11: Stoke - Wing - 77mins
12: Braga - UNUSED SUB
13: Chelsea - UNUSED SUB
14: Chelsea - CF - 98 Mins
15: Braga - Wing - 63 mins
16: Aston Villa - UNUSED SUB
17: Norwich - CF - Played 20
18: Gala - CF - Played 85 mins
19: QPR - Wing - Played 80 Mins
20: West Ham - Wing - Played 15 mins
21: Reading - CF - Played 20 mins
22: Cluj - CF 70 mins/Wing 20 mins - Played 90 mins
23: Man City - Wing - Played 5 mins
24: Sunderland - UNUSED SUB
25: Swansea - UNUSED SUB
26: West Brom - CF - 90 Mins
27: Wigan - Wing - 15 mins
28: West Ham - CF - Played 90 mins
EDIT:
He has spent around
500 minutes playing Wing and 725 minutes playing CF - But that does not take into account that it depends of how much of each was played in a single game, for example, a 100 5 minute appearances against a long match lasting 100 mins would be quite biased, but there is the stats for you guys