No, it really isn't. This is NOT complicated. I am well aware that OVR isn't the leading factor in pretty much anything. I was being VERY SIMPLISTIC because that's all that's necessary to make my point. I know that 834 is the lowest OVR on the Big Board in Smith. So, if I wanted to be semi-prepared for EE, I used 834 as my number.
Now, if I really wanted to dig into it, I'd look at the "important" ratings for each position of the guys on the board. If 87 LP, 91, BLK, 68 ATH, 27 SPD, 88 D, etc, etc, were the low water marks for C, I'd see if my C were there.
You don't have to be "perfect" but you can make a best guess on who is declaring. And plan appropriately. No one should ever be "surprised" by an EE.