The problem with the comparison is that killing Titans is necessary while Killing humans isn't, besides one could argue that Titans could also be made a paralel of yukkuris with their uncanny human like aspects and being the newer guy on the neighbourhood, but, with yu's not being dominant or threats.
Plus there is the whole deal that, it's the very yukkuri agression going too far that leads to yu mass extermination (like that famous noraaki story showed.) Titans just are programmed to go and kill humans 90% of the time so they'll keep attacking without provocation, so while Eren is more sympathetic and inspirational, Maricha is more like a well intentioned fool that will get others killed if she had the chance to properly harm a human, since that would trigger another extermination by the humans.
She, ironically, would save more yukkuris if she created a clan that tried to make proper contact with humans, make a deal with them and tried to understand them instead of attacking them/look down on them.