Hahaha.....creative answer, Roy! It will be the eventual winner because I will cut it off before it overwhelms the superbum!!!

But....of course the growth rate of the coronarium will be much faster! To put things in perspective: the superbum is about the size of a 3 yr old plant, maybe more with the setbacks from transplanting etc...whilst the coronarium is at most 6 months old!
How I wish superbums would grow even half as fast as coronariums!