I think Huntelaar cannot make it outside Holland.
Just like Mateja Kezman (3 times top scorer in Eredivisie a.k.a
the highest football league in the Netherlands in 200-2001 with 24
goals, 2002-03 with 35 goals and 2003-04 with 31 goals), Dirk Kuyt
(2004-05 with 29 goals) & Afonso Alves (2006-07 with 34 goals),
they all have one thing in common - failure outside Holland.
Mateja Kezman and Arjen Robben forged a successful partnership
at PSV, prompting the nickname "Batman and Robin". Chelsea thought
they could emulate the success, bought Kezman at £5.3 million (WTF?
I think the other top clubs must have smell some rat when a
supposed top class goal poacher with a pedigree of achieving top
scorer in 3 seasons cost a mere £5.3 million) but Kezman failed
terribly, scoring just 4 times in 25 games (started in 14 games) in
his only season in England.
Dirk Kuyt was supposed to be a targetman, mis-managed by Rafa
and was deployed on the wings. 36 goals in 134 matches for
Liverpool - Not exactly a top class striker Liverpool was looking
for.
Alfonso Alves is a joke.The most successful spell of his career
was spent playing for Heerenveen in the Dutch league where his
goal-to-game ratio was better than a goal a game (45 goals in 39
matches). This precipitated a club record move to English club
Middlesbrough, thought to be around £12.7m. He scored 10 goals in
42 matches for Boro and the team was relegated. Alves moved to
Al-Sadd, a Qatari Club, on a three-year deal for £7 million
and is now on loan to Qatari giant and seven-time league champion
Al-Rayyan.
I always thought highly of Huntelaar. Young, strong, captain
calibre and always have a keen eye for goal with a good record of
76 goals in 92 matches for Ajax. He was signed by Madrid in a deal
worth €20 million,potentially rising to €27 million.
Huntelaar went on to score eight goals in 20 appearances (13 starts
and 7 sub appearances) in just half a season at Real Madrid. Just 7
months later, he transferred to Serie A club A.C. Milan for €15
million, played 21 matches as of now and score 7 times.
Unless Milan is willing to throw in Alberto Palochi + Huntelaar
for Berba. 
Thanks for sharing the nice bit of info/stats about strikers who
rose to fame in the dutch league but failed outside of it. These
are 3 very classic examples, but 1 exception immediately came to my
mind: Ruud Van Nistelrooy. This man is bound for success everywhere
he goes, at least in terms of his strike rate.