Hi Arturo,
Thanks again for the reply! Very much appreciate your help.
I am certain there is no scaling of the images. I can attempt to upload the files to this post - not sure if there's a better way...
As you can see above (assuming your forum background is white) that there is no aliasing baked into the images. I.e. they have pure white edges with alpha for anti-aliasing. Importing into Photoshop or even Apple's Preview app shows that the edges of the cloud profiles are clean white with alpha.
I confirmed that adding these to the imageLoaderExample project shows the same issue.
Thanks,
-Todd