You are pretty sharp. Yes, the height is increased. The stairs have added risers and treads. The stairs take up more floor space. On the unit for the lower level, the top three steps probably will be completed after the units are set. Might be a challenge for some carpenters. I did mine myself. Noise of walking on the upper level is reduced by the joist separation as is the lessened noise of upstairs toilet flushing.

Thanks bus_driver. I thought that one would have longer staircases, but wasn't sure.

Ahh, that upstairs toilet. Like on the famous "All in the Family" episode, where during her wedding, Gloria said "We're waiting for daddy" and then we all hear the toilet flush! LOL!!!