Our inks are slightly different than Epson inks, although similar in Lab values, they are not exact. Some users will not notice a difference and be perfectly happy printing with their current profiles. Other users, the more advanced, will notice slight differences and have to adjust with a custom profile.
We all know there are many variations that play a role in color shifting, ie. OS, PS version, Printer model, print driver version, paper, inks. Every time any of the variations change you can see changes in output, we always recommend Custom Color Profiling in these circumstances to keep your system printing accurately.
By the way, the Lab values you supplied don't make sense, you need to print the Ink Separation Image using QTR Calibration Mode, 2880 dpi, 100% ink limit and measure ONLY the 80% patch and supply ONLY 3 values, LabL, LabA, LabB.