Thd odds on Higuain to finish top scorer were around 40-50 few weeks ago. Down to ~20 now, wish I had bet some then.
No chance imho. Maradona is pretty defensive and their group is rather decent, so no 6-0 to Saudí Arabia to pad out the goalscoring stats.
On the other hand, whilst he may score a few against North Korea, Fabiano will probably find it difficult to score against Portugal and the Ivory Coast in what is quite a tough group. I can see Higuain and Messi taking apart the Group B defences.
On the third hand , Brazil are probably a better bet to get further in the tournament even if I do think Argentina will surprise.
Is Nilmar likely to start most games? If so, last time I checked he was around the 25/1 mark.