Commerzbank Tower is pretty cool
Four 1 does kinda look taller. I guess it's because its roof is higher than the Commerzbank Tower's.
Commerzbank Tower reaches a pinnacle height of around 300 m (984 ft) and an architectural height of 259 m (850 ft), but it's only occupied up to approximately 190 m (623 ft). The main roof seems to be at around 200 m (656 ft). Four 1's height of 233 m (764 ft) corresponds to its roof height, hence why it looks taller at a quick glance.