Canon G7 X MII has a 20.0MP 1 (13.2 x 8.8 mm ) sized BSI-CMOS sensor and features DIGIC 7 processor. On the other hand, Sony A6300 has a 24.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor and features BIONZ X processor.
Below you can see the G7 X MII and A6300 sensor size comparison.
As seen above, Sony A6300 has a 3.2x Larger sensor area than Canon G7 X MII. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in same focal length and aperture.