Hello,
I've started with mobile display but eventually moved to pops and didn't run anything on mDSP for a while. I would like to test my camps there again so I have some question regarding that:
1. I test offers on pops, and I guess it's right thing to assume that best offer on that traffic source will be the best one on display. Am I right on this one, or do I need to do separate test on display?
2. Same thing about landers
I know there could be difference between pops and display lander, but is it right to assume that if I test 5 variations of lander A on pops, and variation 1 wins the test, same will happen if I run that test on display? Or do I need to run separate test on display as well? 
Also I would like to create some templates of successful banners so we can create them really fast for first round of testing, and would really appreciate if someone can link me to banner creation (tips, case studies, whatever) resources 
Thanks in advance!
The answer is "maybe" in both cases. You are transferring your funnel to a different landscape, different placements and different delivery method. There is a solid chance that your best offer, landing page or both will also work on display, but it's not a "sure thing". It's definitely a good idea to start with a proven funnel thou, it might very well work out, so go ahead and try it.
I'm transfering from Pops to display but I guess the story is all the same
Will try that and once I'm profitable, I'll retest offers and landers I've cut on POPs