SR, he wrote 'cg' not 'cq'.
Centre-of-Gravity.
And to answer the question (Does the off centered cg mess with the SxS much?) - No it doesn't. Plus, the Side-by-Side ATV is inherently more stable and safer than a Quad.
The SxS can carry a passenger. The Quad can not.
The SxS has a load tray (and some tip up). The Quad does not.
The SxS often has a ROPS. The Quad does not (although some attempts are being made to introduce various versions).
Both are often 4x4 capable (JD has 6x4 also).
Also, research the incidence of rural fatalities, in your area/country, involving Quads vs SxS.
Buy a SxS. :2cents: