I agree with you on that and further "evidence" to the fact of not really knowing which characters were selling the mags was that by Marvel Mystery #12, the Angel had the most solo cover appearances, more than even Subby or the Human Torch (5 for the Angel, 4 solo for The Torch, 5 counting the shared Marvel #9 cover). It really was the very beginning for Timely ... and they needed to figure it out as they went along. Sales figures and contest results took time to come in and by looking at the character rosters in the earliest issues of Daring Mystery and Mystic Comics, men in brightly colored tights had a way of being here today, gone later today!