Do you see the issue here?
And the sad part is, that 90% of those boss rushes are the pre-programmed smbx boss AIs.
They're not considered necessarily as a flaw if it's a boss at the end of the level, but it's one of the biggest flaws you can have in a BOSS RUSH. Boss rushes should have bosses which are AT LEAST mother brains on moving layers and some generators, true those aren't the best either but at least not a pre-programmed AI.
"Look me in the eyes and tell me that ad isn't funny." - Joey, 2015
"hitaswitchtohitanotherswitchandseewhathappens" syndrome - Waddle Derp, 2016
"I am in a call with a Natsu" - MECHDRAGON777, 2016
"I know who designed Camacho's level" - bossedit8, 2016
"Waddle Derp is a great minigame" - bossedit8, 2016
"Technically I'm not a voice memer" - bossedit8, 2016