I think Suarez could be less than Huntelaar, while Suarez is a better overall player his more well rounded game (jack of all trades, master of none, etc.) and reputation for not being the most clutch man out there might not be as appealing to possible suitors, plus Huntelaar was captain and more of a club icon, as awesome as Suarez is he doesn't seem to be as popular among fans who have always prided themselves as the main contributor to the dutch national team.
Plus Huntelaar has so far been a huge disappointment, he's had bad luck more than downright failure but his post-Ajax record has been miserable so far, and I think after Real Madrid's dutch oven failed, the dutch league has lost a lot of the demand it once had. In fact now is the perfect time to make an offer.