You're both quite equal, but this formation was slightly more effective/productive since the 4-1-4-1 transforms into a 5-4-1 when defending and into a 4-5-1 when attacking. It could be used as a 4-3-3 if red arrow is applied on the two MC´s or ML/MR. I used this formation last season and ended up as the league winner :p ... Think he exploited your flanks, since you played with 3 DC.