User blog comment:Magna.Zero/Brunhildception/@comment-14.192.210.2-20131124052301/@comment-108.41.225.239-20131127045123

What Magna said. If you apply ATK and DEF on evolutions, you're only getting a fraction of that trickled down if anything in the final form. My math may be wrong here, but your +50 ATK on a 0-star R card will ultimately only apply +3 to the final 4-star HR.