I tried them both on, and found that they're both badly tailored and too big. One is more problematically too big than the other, but I checked the size charts for both of them carefully when ordering, and I measured myself that very day. Why can't merchants size their clothes correctly?
Anyway, I'll stick to wearing the one I bought in the mall yesterday. That one actually fits correctly, and doesn't look pathetically cheap. Which probably has something to do with the fact that it cost twice as much, also. Oh well.