arc gem comparison

base dps of arc ~ 1565787

prefix
18% critical chance while dual wield	0.9%
18% critical chance with lightning 		0.9%
16% spell damage while dual wield		2.3%
16% lightning damage					2.3%
18% critical multi with lightning		3.4%
18% critical multi while dual wield		3.4%

suffix
12% global critical chance				0.6%
14% critical chance with ele skills		0.7%
10% increased damage					1.4%
12% spell damage						1.7%
12% global critical multi				2.3%
15% critical multi with ele skills		2.8%
15% global critical multi with spells	2.8%