Assuming the lenses don't spiderweb at high temps like the Depo '03-05 ones.
I highly doubt a cheap knockoff will have a higher quality projector with better cutoff than the OEM ones, but it may be comparable.
I have aftermarket blacked out ones from eBay and one of them is starting to do that spiderweb thing. It started in the corner and is slowly making it's away around the bottom edge. I'm assuming there's no way to stop this? I'm really disappointed about it because they look absolutely sexy on my truck!!