Can you say how the following list was created: Trello->Platforms->basic 10 tappy
Is this some easy list that compromises wide list of GPUs or is it list of top sellers in US/Europe? Something in between?
Is this what we should be trying to target to get maximum pre-launch coverage?
That base 10 Android support is not at all comprehensive, it is merely a spread of GPUs that we can use to do a quick daily test on new builds for certain projects. If you are looking for a better list of what UE4 definitely supports, see this user supported wiki. If you do not see the device you want to test on this list, you can generally extrapolate whether or not it will work by checking to see if we have tested a device with a similar GPU.