I often agree with you but not on this.
Obviously it depends on how you define poor and if you have it relative to City's best, there's quite a gap but we totally dominated that game against a side that defended well. I had to cancel my trip up to the game at fairly short notice and make do with watching on TV so it's not so easy to see the shape of things as it is from Level 3 of the Kippax. However, it looked like Feyenoord did a really good job of denying City space. I didn't really focus on their players individually but I thought they were trying to man mark a lot and Pep seemed to confirm that in his interview. Maybe GVB watched Wolves. Anyhow, the opponent didn't make it easy.
We dominated, we won. Most teams would be delighted to do that. We aren't most teams, granted, but in the context of the wider world, that performance was at the lower end of decent. Poor is what I saw of Newcastle at the Swamp during the 20 minutes of that game that I could be bothered with.