That makes it much better. The OT is chock full of fucked up stuff, but God's covenant was with his chosen people at the time, jews. Jesus fulfilled that one and created a new covenant with his new chosen people (guess who), Christians. So they'll pick and choose their verses to say whatever shit they want, but when pressed about eating pork or wearing blended clothing, that's what they fall back on.

For extra credit, find an average Christian and give them that verse, but tell them it's from the Quran and ask what they think about it.