Krakan's rating has nothing to do with it. In this situation Star Warrior's Cetus Battleground rating is checked on the chart as is the case in ALL situations where a defender is being attacked.
Rating A is clearly better for Star Warrior (or anybody). He comes back more often and stronger on the chart.
It's the same logic as the regular Champions of the Galaxy game. If a wrestler is thrown into the ropes the WRESTLER ON DEFENSE's ropes rating is always checked and the outcome is better on lower rolls.
I think we have to be careful not to put too much emphasis on the battleground where it over takes from the characters fighting. 4 of the same chart is pushing it. we maybe need to come up with some more charts. not just battleground. I really think a Battlefield "Wits" would be a good chart for say Kraken or Commander Sam. the experience factor should play a part on strategy. with Star warrior and Thantos lack of experience would also play a big role.