Differences between traffic sources

[boostrack]

Hi guys. I'm running an Anti Virus offer from ClickDealer with Push Traffic on Propeller Ads, Zero Park and Self Advertiser.
Here are the stats:

What do you think about these differences?
- CTR
- Landing Page Clicks
- Conversions

Propeller has the worst CTR but the best Click Rate on the landing page, and of course the Conversion Rate.
ZP has HIGH CTR, really low LP Clicks and has the worst performance.
Self Advertiser has a medium CTR, low LP clicks, but cheaper than ZP.

All are running with the same creatives and landing page.

Based on your experience,