Anakin would lose to all because lets keep in mind that theres no evidence that Sidious received any sort of power or skill upgrade over the course of the Clone Wars so TPM - ROTS Sidious are all about the same power/skill level and TFU - DE do actually see increases. Zonakin is good but hes too cocky and rage fuelled to be any sort of good fighter in comparison to Sidious; especially when Kenobi was able to keep him at bay... take Sidious' showings against Yoda, the B team and the Zabrak bros as evidence of his skills