How so? How is God a respector of persons in this case? To argue such you would have to show that God was compelled or moved to set His special, electing love upon some because of some condition of theirs. That God has some measure of love for the reprobate does not undermine God's sovereignty or will in unconditionally electing others to salvation.
God ONLY loves his elect. He grants mercy to the non-elect with his common grace, but just because he grants mercy doesn't mean he LOVES them. HUGE difference.
I don't find it quite so easy to completely exclude any aspect or concept of love from mercy.
You said that better than I did.
"God hates all workers of iniquity."
Love does not equal hate.
You make a good point about he respector of persons issue, but I still see a difference between just granting a measure of mercy in common grace and truly loving people enough to save them.