
Di resta is very technical, and yes he may be a bit boring on the track but he did very well in DTM winning a season AND he beat Vettle and Hamilton and Rosberg in F3, he also won a championship in F3 beating Vettle in the same car!
Now to compare him with Hamilton (And accuse him of arrogance and not Hamilton is rather ironic) is ridiculous, as Hamilton went straight into a top team that is well established into the sport, Di resta wen't into a relativly new team, that aren't know for winning races, occasionally both Hulkenburg and Di resta have got to 4th, they are both exceptional drivers with an un-exceptional team that, from the outside at least, seem to be working VERY hard on improving, in my opinion FI and Torro Rosso are the two lower teir teams that have advanced the most.