User blog comment:Xilinoc/Ch. 561 - THE VILLAN/@comment-24153155-20131211100726/@comment-11051098-20131211161847

"...James being taken down before Rose seemed to have figured what the whole deal is about James in the first place..."

Actually, if you check the previous chapter, Rose must have heard Shûhei's words to Kensei that James had to be taken out first, cos he was right next to Kensei when Mask came back, powered up by James' shout.