Look the bottom line hear is that Both of these tables use a REGA tonearm( while the Acoutstic Sig does have a Carbon option). The sound from Rega arms are Lively , punchy, detailed, energetic, they work particularly well with Dynavector MC or any MC for that matter. This makes for great listening sessions with Rock n Roll, Heavy Jazz, Big Band/ Swing, Acid Jazz ect... While Tonearms using carbon fiber will sound laid back , pretty, detailed, musical, this is great for Pop rock, vocals, classical, light jazz, opera. These arms work great with MM cartridges like a Clear Audio Maestro. So I hope this gives you some more insight.
P.S. I do Own a JA Michell Gyro SE ( a battle ship in terms of quality)and Its the last table ill own, wonderfully thought out and has that great REGA sound using The Tehno Arm 2 on it.
Matt M