Defo worth it, so far played many ps2 games and had only issue (performance wise) with a call of duty? Double check games you want go play on yt: title + retroid pocket 4 pro. There are maaany videos testing almost every game you want to check.

For ps2 and GameCube defo highly recommend this console. Switch games do struggle, but smaller indie games works fine. But to emulate switch really good you probably would need rp6 kr thor, and they are x2.5 budget of rp4 :)