How do these fit in comparison with Wisdoms?

The "fit" feels about the same to me. The splice seems wider because of the strap holder. The splice seems taller by design and how the lens clips in. The Splice fits way better w/ my helmet. The wisdom's design will have a gap on the sides no matter what and didn't work without the accessory strap. There's less pressure w/ the splice. I used to get a lot of cheek pressure w/ the Wisdom's. The peripheral vision is about the same w/ a slight lead to the Wisdom. The Splice has better upper and lower fields of vision though the top's foam seems more see through. I notice it sometimes.

The Wisdom as you probably know, have been discontinued from Oakley's line. People generally bought the Wisdom's because of their capability to be worn on top of glasses. The Splice is closer to your face than the Wisdoms, but what you gain is peripheral from the Splice and style. Do yourself a favor, wear contacts and put away the Wisdoms (so last decade) and get yourself an entirely better goggle. Another major feature I should point out is the internal structure of the frame and how it alleviates pressure off the nose-unlike any other goggle on the market, so you can breathe easy and worry more about how your daffy's look.