Could have been grades but he was also ranked somewhere in the mid 2000's coming out of HS. He likely wouldn't have any P5 offers with a ranking like that and very few D1 offers at all.
It shows he was 170 coming out of HS. But I still think that 185 is still off pretty significantly. He looks to have a pretty similar build to KJ Osborn when he was here and I believe he was in the 200 lb range.