I’ve had similar experiences with Core 2 and Favero Assioma RS2 pedals. See:
https://forums.zwift.com/t/does-it-make-sense-to-use-pedals-with-power-measurement-in-zwift
As @Paulk wrote, the discrepancies are acceptable. The Core 2 is an entry-level model and not a calibrated precision device. The physics behind the measurement are also different. That’s why I interpret the differences in short or high power spikes with the Core 2 as being due, for example, to the flywheel’s latency as opposed to the Favero pedals.
After calibrating the Core 2 using Wahoo’s method:
the deviations are “super” and “ok.” Of course, depending on your point of view, where are the absolute values 