It definitely looks that way. I've been calling it floor 8 that is taller, so it looks to me like floor 15 is taller.
Edit: just went to look at the drawings for this building, and sure enough floor 9 is 3700mm and floor 16 is 3100mm while almost all the other floors are 2800mm. Level 29 is 2950mm and floor 30 is 3300mm. Suspicions confirmed I guess (and clarification on which floors are which). This also means they are currently constructing floor 21 of 30 right now.
Floor "9":
Floor "15":
