It is very vulnerable to SOA, especially in a week when there's a lot of SOA around trying to counter spyke: SOA clans + elvis, bogdan, qubik.
Kerozinn cr. overall is a better card than yoshida, especially against SOA. You really need to get nakata in there, or maybe nata but nakata is better when not facing SOA
Kerozinn Cr> Yoshida only if SOA is everywhere...which it usually is XD but ummm no one can afford her
As for the deck
Jautya> Petra...she is my fave sak
My personal preference....
MurraY> Nakrohm....he is really good vs Montana which is everywhere and solider vs SOA
I actually haven't come across many SOA yet, I'm only at 1150 so probably when I start getting 1270+ I'll start finding them.
I dunno, I have Kerozinn Cr and I never really synched with her, I find Yoshida a much better fit. Against SOA that'd be a different story though!
Jautya is required for the mindgame, he does much better combined with the other cards than petra. Murray for the same reason xD