The difference between "Sunny LeBeau" GlobalSec Icebreaker Suit and Dai V is "Break any number of subroutine" and "Break all subroutine"
When you happen to run into Littlefinger. GS striker M1 user can harvest 5 credit while Dai V user can't.
When you run into Shiro. GS striker M1 user can see top card of R&D or cause credit leak. while Dai V user can't.
When you run into Aiki. GS striker M1 user can hope for card drawing. while Dai V user can't.
I think this is intended by designer to make this harder to use to make decision.