d3v
SRK
Capcom has confirmed that the day 1 patch (which adds legacy controller support) does not contain any balance changes.
http://shoryuken.com/2016/02/10/capcom-wont-be-making-balance-changes-to-street-fighter-v-at-launch/
http://shoryuken.com/2016/02/10/capcom-wont-be-making-balance-changes-to-street-fighter-v-at-launch/