I'm not sure what you're asking. If you're asking if the two paints can be mixed together, my "assumption" is that they cannot.
If you're asking if ModelFlex SkyBluePink is the same colour as Polly Scale SkyBluePink, then I have no idea. The only ModelFlex I used was CN Green #11, back before the CN SIG got it made by ScaleCoat, and Mineral Red.
Sorry, I have limited experience with the stuff.