PFA voting system flawed - Rio
Tottenham forward Gareth Bale scooped both the main award and young player honour last month, before adding the Football Writers' prize as well.
"The problem with the PFA awards is that the voting system is flawed," Ferdinand told www.manutd.com.
"There's so much technology at hand that you could do it over an iPad and just say 'bang, bang, bang' at the end of the season.
"I am not just being biased but if it was voted for today Robin van Persie would win it by a country mile. But it was voted for by the players in late February or March."
For the prestigious FWA honour, members could vote virtually until the result was confirmed. Yet the players have to vote much earlier, which Ferdinand feels leads to an inadequate conclusion.
Both United boss Sir Alex Ferguson and Manchester City counterpart Roberto Mancini are in agreement that Van Persie's Old Trafford arrival from Arsenal made the significant difference this term.
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