Just Blake improving? Well, Doc certainly helped Blake ...
... but how can you not mention DJ's improvement and increased PT? He led the league in boards and fg% and his minutes increased substantially. Without Doc as coach DJ doesn't just not improve like that - he's probably gone.
Given their injuries I think the single game improvement over last year is substantial and the defense they have played this season is a marked improvement over last.
Golden State will be a good yardstick ... although the Bogut situation sucks for them.