Janowicz is a beast.
I can see why he's so erratic though. He attacks EVERYTHING. But he has so much talent. When he's on-form (like he is right now), he just pummels everything for winners (with the occasional drop shot thrown in to mix things up).
I think he'll have to learn to control his temper (much like Murray has had to) and control his aggression (talking tennis now) somewhat, but the more experienced he gets, the more consistent he gets, the better he becomes. I don't know about #1 as some fanatical 'analysts' like to make out, but certainly top 10, top 5 potential there.
Top 10 for sure, but I agree, I don't think he's consistent enough to be world number 1.
He is so erratic. Needs to keep calm. A bit of emotion is good for him I think, but not a lot.