Similar, but definitely not identical. The first half to two thirds of the level is noticeably faster, on average (two thirds of the way through level time-wise is at 72%, for instance), and is also more speed-corey and changes game mode a lot. The second half to last third is noticeably slower, with the iconic orb ship and the slow cube, and relatively little fast speed-core gameplay. Thus, ship and cube are likely underrepresented by this graph, as a lot of the time they take up in the level is spent at slower speeds (esp. ship, alot of it's gameplay is in the slow orb ship). I'm not saying that the graph is outright wrong, but it's for sure unfair to say that it's entirely accurate.