Amanda was invited for Micronesia because Courtney declined. That is FACT.
The Cirie/Sabrina comparison is because both women are smart, were given opportunities to have many confessionals about the tribe and about their game and both have an entertaining way to present things. Nothing to do with skin color, just the fact that it's rare that women get that chance.
About: "For michel, women with attitude = Good. Men with attitude = Bad."
I'd say that's a straw man argument.
I like smart players and showing an attitude is often a way to get voted out. I like characters with an attitude for entertainment value, not as players. Take Shane: Loved him but not as a potential winner! Chris had an attitude but knew how to harness it.