Does in-lens IOS stabilization affect an image evenly?

[xvvvz]

Is Panasonic in-lens IOS stabilization known to be more effective in the center of an image compared to the corners and edges? I did a few handheld basic comparison shots with a GX7 and a Panasonic 42.5 1.7 utilizing its in-lens IOS as well as an Olympus 45 1.8 using the GX7's 2 axis IBIS. The 42.5's shots were sharper in the center than the 45's but out toward the corners and edges the 42.5's images didn't do as well so that is why I am asking.

 

[Wasabi Bob]

The in lens stabilization uses a lens positioned in the middle of the optical chain, that is suspended by two magnetic coils. Its position is controlled with sine / cosine detection motion sensors. The stabilization is applied to the entire image, equally. There are two additional advantages seldom mentioned. It also offers an option that disables any correction to the left and right directions. This can be selected when following horizontal action by panning. If not enabled, sudden horizontal movements could temporarily disable or reduce the amount of vertical correction. In lens stabilization increases and decrease proportionally as you zoom, so the amount of stabilization is constant.