I mean, Fnatic has a good win rate on every map. Ascent was the map with the worst win-rate for them. Saying "only lost twice on Ascent" is true, but also meaningless since any other map would have been better than that as well.
I agree with your last point. Loud was well-prepped for Lotus. Ascent was close, but Fnatic gave away early leads on both maps. Loud played well to gain those leads.
I guess Fnatic might pick Bind over Lotus now and maybe even bring out Pearl.