Agreed. They're very close in power, while Maul is probably ahead of Kit Fisto. Fisto's animalistic rendition of Form 1 was insufficient to stand against Sidious' Juyo, a style Maul also favors, and it fell easily to Ventress, who is arguably slightly lower in standing than Maul if not his equal by virtue of being a Jedi killing machine. Grievous may be the exception, but that simply proves the rule. Against anyone who uses the Dark Side of the Force, Fisto simply fails to deliver.
That being said, Maul could overcome Fisto before Mace could overcome Dooku, and then the most badass Jedi Council member is proper ****ed.