They're not exactly the same, but they play similar roles and I think Bridcutt does a better job of it.
Trotter of this season then yes I'd agree, Trotter of last season and the season before then I'd say Trotter is the better player. I think he's just playing in a poor Millwall side. Bridcutt does have some class defenders behind him (for this division) helping him with defensive decisions. Upson and Bridge? Crazy.
i would be over the moon with a bridcutt/trotter/meyler/cairney/quinn cm squad!!! its not going to happen but just imagine that