How I measured this
Every number in this review is one I measured with my own equipment and instruments. Swing weight on a Briffidi SW1, twist weight on a Briffidi TWA2, static weight on a precision balance scale, serve speed and punch volley speed with a radar gun, spin from a high-speed camera at over 500 frames per second, surface roughness with a stylus roughness tester. It's the same setup for all 616 paddles I've measured.
J2NFT 16mm: Swing weight 115.1 · Twist weight 7 · Spin 2,292 RPM · Static weight 8.02 oz · Serve speed 60.2 MPH · Punch volley speed 38.7 MPH
Shogun 16mm: Swing weight 122.6 · Twist weight 6.12 · Spin 2,168 RPM · Static weight 8.24 oz · Serve speed 55.8 MPH · Punch volley speed 35.9 MPH
Hurache-X Alpha Pro Power 16mm: Swing weight 113.6 · Twist weight 6.35 · Spin 2,282 RPM · Static weight 8.01 oz · Serve speed 59.4 MPH · Punch volley speed 38.8 MPH
If a metric is missing above, that paddle hasn't been through that test yet. Full measurements for each paddle are on its paddle page. My method is written up on the methodology page, and every paddle I've measured is in the paddle data study.
How I test and measure paddles See the full paddle data study