If I remember right, the actual cards on these figures specify that the counter, for example, a red square, or a black square, or whatever, rather than writing out the words "red color" as seen in the Units section.

Their errata from WizKids states, "[E]COLOR-COORDINATED: Outwit, but only to choose standard [Color] powers."

Contrast this with the new Harry Leland chase from the X-Men Animated Series set, who DOES spell out the words "Outwit black powers" on his card.

Can the Mercs for Money from this fast forces, such as represented by Deadpool above, counter the "circle" powers from the WWE set (assuming they match on color), or are they to be understood as working like Leland, who apparently can do so?

Going by the wording of the errata, I would think that they certainly could.

The cards actually have the colored circles in the power (like how standard powers are shown on character cards). But yes, unless we get something official from WK stating otherwise, these definitely work on the WWE powers.

I'm guessing we'll need clarification on if they can be chosen by powers that allow you to pick a standard power, even if these are intended to be standard powers?

It was already addressed? They are standard, but can only be picked if WWE characters are on the map. So Goblin King can't pick Nimble, unless The Rock or Stone Cold is there.

https://wizkids.com/heroclix/2019/06...ix-highlights/

Had missed that, thanks for the link.