No, you said that if these guys wanted to win a Slam, first they had to get past Ferrer, which is clearly false. Each of them is far more likely than Ferrer to win a Slam than Ferrer despite being ranked below him at the moment.
Yea, sure. On paper they seem to be more likely, but in reality only Del Po won 1 slam, all other slams for years now were won by Fedal and recently Nole. Bottom line, your "more likely" means nothing.