Verified answer

Episode 48

http://www.youtube.com/watch?v=9GGnySb-W8c

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(MAJOR SPOILERS)

If you have watched the battle of fake karakura town, where Gin reveals his Bankai... well... damn. He's strong.

I would say 10 times stronger than hitsugaya.

http://www.youtube.com/watch?v=s_OCOiAIU2Y

And then it was revealed a few episodes later that it was a fake Bankai.

His Bankai is much much deadlier.

http://www.youtube.com/watch?v=Z0fKi94Wzhc

Toshiro Vs Gin

Episode 48

http://www.youtube.com/watch?v=wfHgv3tAvqU

GIN might will coz his sword is super fast and long ;)

You are a punk ***