So much for deal stickiness. ACI Worldwide bidding on top of Fundtech for S1. When I blogged about the Fundtech-S1 deal last month I asked the question, “wasn’t this ACI’s dream? ” I wondered why ACI Worldwide hadn’t made a go for S1 considering it’s platform has many of the moving parts ACI Worldwide was missing with its last home-grown attempt at the “global” platform. Any way you look at either deal, S1 wins. Maybe cash in the hand is worth more than paper. Fundtech, however, has a robust payments business and clientele and regardless of how this drama ends, I do not believe they will be too bruised by the outcome. In many ways, the ACI Worldwide deal may be the best thing to keep smaller agile competition and deal targets open.