But we're sure using largest remainders. I think the Dutch are as well, and their threshold is 1/150th of the national vote.
No, we don't. In the Netherlands, the d'Hondt-largest averages method is used, at least for elections involving 19 or more seats (which are all elections except municipal council elections in municipalities with <20,000 inhabitants).
The threshold is 1/150th of the national vote though for Second Chamber elections, for other councils with 19+ seats there is no official threshold, but the largest average method favours the larger parties.
For municipal councils with 9-17 seats, the largest remainder method is used, and a threshold of 1/(0.75*# of seats) of the vote.
The largest remainder system was used on a national level though, from 1918-1933, with a threshold of 1/200th of the national vote in 1918 and 1/150th in 1922-1933. Since this resulted in a lot of small parties and electoral tricks by larger parties, this was abolished for the 1937 elections when the present system was introduced.