how to set LAME 320kbps mp3 settings to the same as ffmpeg?

was just wondering what exact settings i would set in LAME (wxlame) to get the exact same quality as ffmpeg 320kbps, been playing around all morning and the lame insane mp3s

i normally just use this sample command in ffmpeg

ffmpeg -i input.wav -ab 320k outputfile.mp3

(so basically want this exact command for LAME if possible)

not sure why but the mp3s done in ffmpeg always sound way cleaner than the LAME insane ones tested on both headphones and bang & olufsen speakers

anyone else noticed this?