Toshiro Vs. Gin... Epic! Toshiro Vs. Halibel... A bit pitiful... What happened?

(Tell me what আপনি think... Izuru judged Toshiro's powers, concluding that he was immensely powerful, plus he fought equally with Gin, who ended up commanding the Espada alongside Aizen... So how did he end up fighting pitifully against her?)