Many have claimed Emery's battles with the local language were the main reason for his downfall.
But Guardiola argued: "I cannot deny that communication is important but if he won more games, the communication would be seen as perfect.
"It is not easy to speak in a different language. I did it Germany but there a lot of other weapons in how to communicate; the hands, the body, emotions, images.
"The capacity of Unai (to speak English) was not the reason he has left Arsenal, no doubt about that. It happened because he didn't win games. A manager is analysed differently depending on the result even though it is the same guy there.
"If you win, people would say it is perfect how he communicates."