It's more that Kubo is almost incapable of writing abilities that aren't logical binary Win/Lose abilities. Ichigo's original Bankai was one of those since it was Super Speed, which meant either Ichigo was faster and one or his opponent was faster and he lost (and his Bankai looked completely useless). Kubo went with the second, and seems to have completely ignored the Speed aspect of Ichigo's Bankai from then on (that or Byakuya got a *lot* faster in between Ichigo's fight with him and his fight with Zomari*).
It doesn't help that characters often fight like Zaraki, completely ignoring their skill sets and strengths to get into straight up duels, and often forget about Kido, positioning, learning about strengths, and surprise.
* Zomari claimed to be the faster Espada, Grimmjow ran rings around Bankai Ichigo when they first fought, Zomari notably did not run rings around Byakya. In conclusion Byakuya is faster than Byakuya (??).