If your Tablo is connected via WiFi you might get a stronger wireless connection cause the Dual Lite has Wireless AC. The OG units are Wireless N.
But yes the Dual Lite has an internal amplified 1x2 splitter so in theory the minimal signal loss should be less. This was confirmed in the thread below:
https://community.tablotv.com/t/what-the-deuce-is-this-new-gear/