No, it was all the matches and who we played, we had a good run in Jan/Feb because we played most of the bottom 8, after that we played a lot of top half of the table teams, with Cesc injured we couldn't win, really at most stages of the season.
IIRC from after the Stoke game we've now played 13 games, won twice lost four, drawn the rest, pathetic record.
I've said for 3 years, people have no idea just how good Cesc is and how much he was saving our asses. RVP is a simply awful lone striker, if it wasn't for Cesc being the best throughball player in the game 4-5-1 would have failed badly a long time ago for us. Wenger not replacing him before preseason, let alone the start of the season, is just about the biggest mistake any manager has ever made.