Advantage of mimic over CMU's Flite (Festival Lite)

As mimic git repo states " Mycroft’s TTS engine, based on CMU’s Flite (Festival Lite)". What advantage it provide.
Why should I use mimic instead of Flite?

Unless you have flite setup already, the scripts are built around getting mimic working.

The compiled Footprint of Flite (with CFLAGS = -Os -s -Wall) comes around 16MB where as “eSpeak” footprint was just 2MB with same functionality.
What significant advantages are there that “Mimic” claims under section

Why should I use Mimic instead of other open source TTS tools

I’m also curious about this

As a side note, mimic can use flite voices