Not really in my experience. Each type (clay, syringe, paste etc)
has it’s own characteristics, and each formulation likewise (PMC,
PMC3, ACS, ACS 650 etc), the most obvious being firing
temperatures/times and shrinkage factor.
I’ve used all the formulations for both makes at one time or
another, and now I just use whichever one is best suited to a project
regardless of whether it is PMC or Art Clay.
My ‘workhorse’ metal clay of choice is ACS 650, because it has less
shrinkage than PMC.