Which class is better for Jormungandr

[Bobo]

All in all, Marauder seems to be the strongest chars to slash, superior to Zwei in terms of weapons available: for Zwei 2H dealing more than 60c damage one must pay crazy high prices while just take a look at SunPike stats vs price... Polearms are also longer that helps to slash effectively.
A question: do you think it does influence the speed bonus that the weapon is longer? That must mean the linear speed of the part hitting the enemy while slashing is higher that that of a shorter weapon...