Sounds good.
I played against the wide diamond three times this season; also saw it the champions league semi-finals. Can't really provide any meaningful data, because I kept on changing my formation in the cup and 2nd CL semi-final match.
In the 1st CL match, I mirrored the wide diamond and escaped with a 2-1 win when my AMC scored in the 90th minute. 2nd leg, I came out in a 4-1-2n-3, I took an early 1-0 lead but changed formation since my opponent was launching counter-attacks like every 5 minutes; used 4-3n-3 and 4-1-3n-2 (ended up winning 4-0). As you saw on my cup match, I started 4-3n-3, but I was using musical formation. I had changed to a 4-3n-1-2, then 4-1-2n-3 (I think he scored against this) and also tried the 4-1-2-1-2 ND. To many different variables in a small sample size to really understand what happened.
Also in the case of the cup, its probably important to note his quality advantage made it so I might have lost regardless of what I did.