FCS tooltip for attack chance factor incorrectly states double of the actual attack chance

[user5499871]

version: 1.0.65, fcs 2.14.2
attack chance factor 0.05:
110 vs 100 attack: 210/173 (383 total) 0.5483/0.4517, expected 0.6/0.4
100 vs 80 attack: 233/160 (393 total) 0.5929/0.4071, expected 0.666/0.333
114 vs 96 attack: 25/17 (42 total) 0.5952/0.4048, expected 0.6552/0.3448

attack chance factor 1:
100 vs 90 attack: 304/63 (367 total) 0.8283/0.1717, expected 0.9091/0.0909