Dupe Thread: See Natsu Dragneel vs. Toshiro Hitsuguya
If this is atlas flame Natsu, than it all depends on what version of Hitsugaya this is:
Hitsugaya said that there is no big difference between his bankai and shikai, but his combo with Rangiku is shown to be a crazy upgrade.
Oldboy is a perfectly serviceable and unremarkable Hollywood thriller. This, incidentally, makes its existence all the more pointless.