No, I-129F and I-130 take about the same time to get approved nowadays. Few years ago, yes, fiance cases were faster.
Check processing times.
Below there are screenshots taken just now for proof.
0.5 months difference can be ignored as each case is individual and can take few months shorter or longer, whether it's I-129F or I-130.
And most importantly, once immigrant enters with immigrant visa, they can work, travel and feel much more free compared to being stuck in AOS process for another year or so.