Not if you take it (his quote) with emphasis on the words "As far as quarterbacks..."
I don't think tOSU is traditionally a school that attracts the elite QB recruit. That doesn't mean we haven't developed some good QBs, and maybe with Troy Smith being the first Big Ten Qb to win the Heisman, perceptions begin to change. But I think we are considered (largely from outside the conference) as 'smash-mouth football', "three yards and a cloud of dust", etc., and I'm sure Coaches recruiting against us play that stereotype up a lot when highly rank QBs have looked at OSU.
So I don't think saying that Pryor being the highest rated QB considering tOSU since Schlister is out of line at all. All players considered, you'd have to talk about lots of other kids being in the same 'class' like Teddy, MoC, Beanie, MDA, etc.