In my former life I orchestrated controlled peel adhesion tests on all Resene Paints (A local paint manufacture in NZ) using both a permanent cast film and a removable polycal film. To cut a long story short it’s not so much about if it’s an Acrylic or an Enamel based paint, there are good and bad in each, it’s more to do with what they put into them and the finished surface rheology.
In layman’s terms
Have you seen an ad on TV where young Johnny goes and marks a painted wall with crayon then mum comes up and wipes the mark off? Well that has keep clean additives in it and stuff don’t like sticking to it. What do we want to do? Stick stuff to it!
The place I use to work for have since tested all paint manufactures in New Zealand, again it’s more to do with what they put in the paint, and that company now has a library of all paints sold here in NZ.
The attitude we adopted here is spec a paint that you know will work. If you don’t know what paint it is and what the surface energy is like then do a simple test yourself. The test is either a tape snap test or a peel adhesion test using a electronic spring scale (what ya weigh fish with) and compare that to a library you set up of what you know are both high and low surface energies.
Then we get into cure times but that’s for another discussion.