I don't know. They're too far away for me to physically check out.
And if you look at the equips, there are actually multiple reasons why these are different.
1- Like you mentioned, there are 8 studs, instead of 16
2- 10 spokes rather than 8
3- The spokes are all the same width; on the Equips, the widths alternate
4- There is a full circle around the 4 lugs in the middle. On the Equips, there is not.
If I look at them for any length of time, more differences seem to pop out. These are just the obvious ones that I've detected so far. Anyone with an eye for detail will be able to spot more, I'm sure. Thanks, however, for helping me out. This has got me stumped.