How accurate is pixel tracking on AdWords?

[finspin]

I know this has been chewed over and over but I have yet to see someone saying that it's actually AdWords tracking that is wrong, not the affiliate network.

A few days ago I ran into first such a problem during my short affiliate career. I'm in contact with my AM, trying to sort it out. My actual conversions are about 30% less than what AdWords says.

I'm sure many of you investigated tracking problems with your AMs. Have you ever been convinced that AdWords pixel tracking was off?

 

[gopher]

Unless they placed the Pixel wrong, then no. If it's placed on the confirmation page, then there shouldn't be any reason there's such a big discrepancy.

 

[Avalanche]

I have a pixel on the merchants thank you page that reports about 2x what the network is saying... so I switched networks and it's the same problem. So, either the merchant is routing people to that page without making a sale somehow, or there is an even bigger problem :repuke:

 

[tob]

Yeah - usually reporting is off slightly, but I find it's ALWAYS the case that my network is reporting more than adwords is reporting.