Because, if you notice, i only did it at times where my opponent had enough meter for a breaker. I always love to get as much damage as I can on a punish before my opponent breakers out of my combo. That said, i use b2 to punish cannonballs and follow up with unbreakables from that point. Doing it that way before they finally break it has the potential to earn you 25-30% damage as opposed to just 5 from a f2,1 getting broken. the trade off always pays off. When my opponent doesn't have meter, then it's f2,1 city for 40-49% mid screen and 50 plus in a corner and it's slam dunk thank you punk!