Because it's too early for her to be defeated,
Says who?
and we just met her upclose. All she's been doing is sending her commanders after her enemies and trying to look intimidating with Zeus and Prometheus beside her. If she gets defeated by Luffy this arc it would look really stupid since the only reason Luffy would defeat her this arc is because he has to defeat her, and because Oda has no other way for Luffy to defeat her.
You're comparing her to Moriah in other posts.. Moriah was introduced and defeated all in one arc.. (like many other enemies) at least Big Mom has had build up in conflict for more than one arc..
I mean, it's not like he's stronger than her,
I disagree.. I think he's physically stronger than her..
It seems that most of her "power" relies heavily on her being able to take away the lifespan of someone who is scared of her or cowering.. everything Luffy is the opposite of.. lol
Did you see her "rage" and destruction of the town when she was having one of her food tantrums??
Luffy's KKG showed to be
much more impressive..
since the niquh was struggling with Cracker, you really think it would be reasonable for her, a yonko, to be defeated by someone who was struggling with one of her commanders?
At this point in the story, I think Yonko have some of the strongest characters as their right hand men or "commanders".. aside from Admirals and Shichibukai, the Yonko are the strongest opponents left.. the top fighters of their crew should be strong as well..
Do you think Buggy is extremely stronger than everyone in his crew??
Again, pathetic, and I hope it doesn't happen. In fact, I would like it better if she was killed off panel after this arc because the only way for Luffy to beat BM is with help from everyone else while Luffy is in G4 at full strength.
Call it pathetic all you want.. but it's most likely going to happen..
Idk what problem you have with Oda doing this, since it makes the most sense from a story telling perspective..