I had one of those weird classes today where apparently my reaction to the texts was different from other people's. A lot of folks, including the professor, said one reading in particular was very difficult. Now, no doubt it wasn't an easy piece, but I have found a lot of other pieces this semester more challenging. (This isn't an underhanded way of praising myself for being smarter than the other kids; there have been other readings where the situation was entirely reversed.) Moreover, I found it very helpful in clearing up some other stuff we've read that I've never quite gotten, whereas some folks - and this isn't too strong a word - hated it.
This kind of thing is interesting when it happens, especially because it's not a case of where the reading was clearer to one person because it fell within their specialty or because they have experience with the method. Sometimes a student just finds a work unexpectedly difficult, or really engages with something, and it seems like there is no good reason.