When you highlight and underline too such an extreme, it makes me read your response as if a child is screaming at me.
I am aware of the quotation, and could probably recite it to you by now, because you are holding onto it word by word, a tranlation by the way, for dear life.
I suppose you believe Sakurai is straight forward with everything he says, too, that he is completely transparent about what he is doing with the roster and his character choices? That is the only way I can see even attempting to hold so vehemently to the words.
That said, it overlooks the entire premise of his statement- that Chrom was not suitable for a roster spot, and that Lucina was. What would make Lucina worthy of being playable and not Chrom? Please, for the love of God, do not print the highlighted blue font where he states her altered stats. That is the result. If he wanted Chrom to be playable, he easily could have given Chrom that same treatment.
What we can gather from this is that, as an IP, Lucina had something which Chrom did not, a unique characteristic, because either could have been given altered statistics and been made a clone. Unless the characteristic in staitstics is available and determined in FE:A (it is not), this is indicative of Sakurai showing his Bias towards Lucina, because her unique characteristic is in her IP versus Chrom' Ip, not in her gameplay potential versus Chrom's gameplay potential.