i currently have an NES classic but not an actual NES and i was curious to know if there are any drawbacks to using the NES classic over the original?

i wasn't able to record a video of this so i understand if you don't trust this but i did a speedrun of the single player glitchless category on the 12th of April 2019. i got a time of 3'35''07. (with loads) wish i could post it to the leaderboards but a video is required so i cant.

would it be theoretically possible to, by any means, activate the BBG cannon without slowing down? is it even plausible? because if so, it could save several seconds.