I know what my eyes see as well, and I think they are pretty good at pass protection. I trust my eyes and objective data more than your eyes, but go on and believe what you want.
edit: I should add, they were really bad vs. Michigan and PSU (injuries a huge part of that, but also some scheme issues). They made schematic changes after that point. They had given up 16 sacks in 6 games to that point (8 vs. Mich). From that point on, they gave up 7 sacks in 7 games.
So over the last 7 games, they were sacked 7 times, and they had 241 pass attempts. Pass attempts isn't exactly the same as "dropbacks", but it is pretty darn close, so that gives them a sack rate of 2.9% over the lat 7 games. That would rank in the top-5 nationally.