Differences Between the shutter and the shutta?

Changed first was the most critical element, the material, to 7075 aluminum. In addition the weight was further redistributed to allow a wider center bowl with a slight concave for finger spin access and control, but keeping the Shutter ‘step’ Shu uses in his 1A play intact.

I read this, and this didn’t help my friend and I. What does it actually mean? for an intermediate player with a shutter, how will it feel diffrent?

Spins longer and more stable