the room size at Pop and the All Stars is exactly the same square footage. I will say that to me the Pop rooms post-refurbishment feel larger than they did before even though they now have 2 queen beds rather than 2 double beds. The rooms are just layed out better now with a lot more storage. (If you have the table bed up there is even more space). The All Starts are starting to be refurbished also but I am not aware of what order the refurbishments are being done.
You mention ‘preferred view’ and ‘pool view’. These types of rooms actually fall into 3 different categories at Pop so depending on what you book, it will make a difference in which building you are placed in. The 3 category options from leastvexpensive to most expensive are:
1. Standard pool view -buildings 1, 2, 3, 7, 8 and 9
2. Preferred rooms - buildings 1, 3, 4, 5, 6 and 10.
3. Preferred pool view rooms - buildings 4 and 5
If you google ‘Pop Century Map’ you can quickly find a map to go with above info.
Hope this helps.