after one month of test and inquiring, here is what I've found
the Classic 57 in my ES355 Memphis were overly bright and very close to an Alnico5 pickups type, so maybe they've mixed A2 and A5 magnets at the factory or maybe produce a batch of A2 magnets with a very high Gauss magnetic field
I've replaced the pickups with a set of S-Duncan Antiquity, which were better sounding, but got even a better result with a set of Alnico4 humbuckers, which is perfectly balance in this guitar
hope this could help people with same issue