Uctqnde - 5:17 pm on Jul 26, 2013 (gmt 0)
This is a really interesting topic, and I am facing this issue as well - I am seeing an increase in CPC's for tablet in some campaigns, whereas others are cheaper - but conversion rates on tablets are all around much, much lower for tablets (as are the overall impressions and clicks to be fair).
Our product is better suited to convert on a desktop, but it's fine for tablet too - I am guessing a lot of our customers are surfing on the tablet, then choosing to convert on their laptops/desktops. Our Google rep also mentioned the beta for multi-device conversion tracking has closed, and when it reopens we might be able to get into it.
I think it's ridiculous that Google pushed the enhanced upgrade, forcing people onto devices they might not want to advertise on, without at the very least providing individual device bidding options, but that's just my opinion.