Interesting.
I don't think this is an issue in all leagues.
For example, in CUST 10, we've played 9 games. There are only 2 teams averaging over 300 yards per game passing.
Could it be a gameplanning issue? Too many blitzes or something?
If guys are racking up yards because they're wide open due to the playcall, it won't really matter what the ratings are.
If they're making big gains because they're some little receiver with a low break tackle ability shaking off defenders with a good tackle rating, that's a real issue.
I do think the ratings should matter. If you're good at breaking tackles, then you break some. If you're not, you don't break very many.