victim /vɪktɪm/ noun
3. a person or animal sacrificed or regarded as sacrificed: war victims.
http://dictionary.reference.com/browse/victim
The difference with Christ sacrifice and a "victim" is that Christ gave his life willingly. A "victim" may be sacrificed but not willfully. Our Lord was very clear that no one was taking His life but that He was laying it down for us.
Eph 5:2 And walk in love, as Christ also hath loved us, and hath given himself for us an offering and a sacrifice to God for a sweetsmelling savour.
It is really unimaginable that Catholics would not question why the Church would change the context and meaning of clear scripture. Their love for the Church must outweight their love of God's text.