I don't really agree. Yeah he showed in needed moments of CL big nights, but he hasn't seemed like an instinctive striker who scored weekly exactly because his game seems to be well rounded enough he forget the key killer instinct habit you need to have to sniff out these changes regularly. We needed it less last season due to Tevez, but even then I didn't think he was type to consistently score versus smaller teams in the league. Rarely impressed scoring wise vs settled defences in small venues like that.
It's unfortunate so far but I'm not suprised he hasn't scored alot so far because of previous mentionned reasons , even if it's a surprising it's this bad because the mental obstacle of bad form.