Comparison: Unarmed Attack vs Reference Grapple

	d6	d8	d10	d12
d6	1.00x	0.64x	0.39x	0.25x
d8	1.57x	1.00x	0.67x	0.43x
d10	2.54x	1.49x	1.00x	0.66x
d12	4.04x	2.34x	1.51x	1.00x