First track: I think in terms of the production quality, it's good. The mix is nice. For some reason the kick sounds a little off (overwhelming) to me for this track, especially when everything is sidechained. Almost like it's taking up too much space/too loud. It might just be the headphones I'm listening on though. Vocalist is talented and the vocals sit in the mix well.
Second track: Maybe a little better than the first in terms of the mix. It's nice and tight. It's a little more subtle and I like that. Overall, very nice.
Ok, so I have to ask: You're a talented producer and know what you're doing, no doubt. You also have a very talented vocalist. I just am not sure what sets these tracks apart? (did you write these songs, or did the vocalist?)
You take some small risks production-wise toward the end of both tracks (which I like), but otherwise these tracks are very standard tracks to me. The singer has a such a nice voice, it almost seems a shame to waste it on some very standard sounding club tracks. I'd just let this guy kill it naturally--I've always thought augmenting a voice with FX should be reserved for less talented singers, not somebody like this with excellent natural talent.
Maybe the response isn't as good as you expected because the track is simply too ordinary. Between you and the vocalist, there's too much talent here to be wasting on this "standard" sound. "Waste" might not be the right word because you've obviously put hard work into these, but given your obvious ability, you should be able to carve out some unique flavor in your mixes to make these club tracks real bangers.
Just my 2 cents, and take my commentary with a grain of salt because I'm certainly not a pro producer or anything. But I know talent when I hear it.
You can't fail if you never stop trying.