In theory they should be if they are mixed in accordance with the company's standard practices to meet the Fed_Std, the ANA standard, or any of the company's standard recipes.
However you are talking about different materials; different vehicles (i.e. the enamel or acrylic paint carrier which evaporates), possibly different pigments, different product lines (different facilities/machinery), different production runs, different days of the week (first day back after a holiday ;-<) ... No guarantees can be made.
Paint is not that expensive. Buy a bottle of each and do a side by side comparison test for yourself