Filipino here, I actually just came back from Cambodia. By no means do I claim to be an expert, but I can say Cambodia will never surpass Philippines economically based on what Ive seen. I read this in a magazine, that over 60% of their workforce is dedicated to rice growing. And its not even high quality rice either. Even Cambodians dont eat their rice. They import from Vietnam for their rice consumption. And even if their economy grows, they still have a long way to catch up to Philippines. Cambodia is a nice country to visit though.