Nah you are relatively right in that its including his powee. Its 180m "max" apparently, but that's from the vivre cards and tbh really doesn't agree with the Marineford picture. Like, that building clearly is over 160 meters tall, especially from other perspectives.
However, we don't know the true dimensions of Mama Canter, and I highly doubt it towers over Marineford. Chances are, Odas perspectives of it are fucky compared to Sunny, which is where people get ridiculous estimates like 500 meters.
Its one of those thing where relying on "official" heights starts to get silly in this manga because Oda's perspectives are weird a lot
However, we don't know the true dimensions of Mama Canter, and I highly doubt it towers over Marineford. Chances are, Odas perspectives of it are fucky compared to Sunny, which is where people get ridiculous estimates like 500 meters.
Its one of those thing where relying on "official" heights starts to get silly in this manga because Oda's perspectives are weird a lot