Para a pergunta "Qual o melhor emulador de PS2 para Android 32 bits?", a resposta honesta é dividida em duas partes:

Finding a high-performance PS2 emulator for 32-bit Android devices is difficult because most modern, high-speed emulators (like

There are very few good PS2 emulators for because PS2 emulation (like AetherSX2 / NetherSX2) requires a 64-bit CPU and OS to run at acceptable speeds. Most 32-bit Android devices are older (pre-2015) and lack the necessary GPU drivers and memory addressing.

Rumored "optimized 32-bit fork" of Play! – largely vaporware.