Here is a breakdown of the remaining defencemen with the strongest WHC All-Star voting records.
Valeri Vasiliev: 1st (1975), Tied for 1st (1981), 2nd (1974), Top 2 (1977), Top 2 (1979), Top 4 (1978)
Even if both Suchy and Kasatonov have very strong voting records I would probably say that Vasiliev has the second strongest WHC All-Star voting record among defencemen (behind Fetisov). Considering that Vasiliev was voted the top defenceman by the directorate in both 1977 and 1979 (tied with Bubla) it seems likely that he did very well in the All-Star voting at those tournaments as well. It is perhaps also worth noting that Vasiliev in 1981 was tied for 1st place in the All-Star voting with Larry Robinson and with both Fetisov and Kasatonov playing at that tournament as well I think that it is fair to say that the competition at the position was very strong. Considering that Vasiliev was voted the top defenceman of the 1973 WHC by the directorate it seems likely that he recieved some voting support from the media that tournament as well even when we know that he did not make the First All-Star Team.
Jan Suchy: 1st (1968), 1st (1969), 1st (1970), 1st (1971), Tied for 9th (1974)
Suchys 1968-1971 stretch with four straight times leading the All-Star voting among defencemen is very impressive and something that only Fetisov managed to equal between 1985 and 1989. The problem with Suchy is of course that he outside of his incredible peak did not achieve very much of value although he did get some fringe support in 1974 as well. If one values peak performance highly I think that a case could be made for Suchy having an even more impressive voting record than Vasiliev though.
Alexei Kasatonov: 2nd (1982), 2nd (1985), 2nd (1986), Top 2 (1983), Top 2 (1991), 4th (1987)
While Kasatonov played in Fetisovs shadow during his prime his voting record is still very impressive. Being a 5-time First Team All-Star and a 1-time Second Team All-Star is a testiment to his great consistency and elite longevity on the international stage. With that said I think that it is harder to argue for Kasatonov being ahead of Vasiliev when it comes to WHC All-Star voting records than doing the same for Suchy considering that Vasiliev had similar consistency and elite longevity while clearly peaking higher than Kasatonov.
Frantisek Pospisil: 1st (1976), 2nd (1972), Top 2 (1977)
Even if Pospisil did finish top 2 in the voting three times it is very clear that Pospisils WHC All-Star voting record does not quite measure up to the voting records of Vasiliev, Suchy and Kasatonov.
And for reference sake here is Fetisovs voting record.
Vyacheslav Fetisov: 1st (1978), 1st (1982), 1st (1985), 1st (1986), Tied for 1st (1987), 1st (1989), 2nd (1990), Top 2 (1983), Top 2 (1991)