What's the difference? StringCompare / ==

MsgBox(0, "Yes", _
        ('33' == '33') & @CRLF & _
        StringCompare('33', '33', 1))

$hFile = FileOpen('D:\File1.avi', 0)
$sText1 = FileRead($hFile)
FileClose($hFile)

$hFile = FileOpen('D:\File2.avi', 0)
$sText2 = FileRead($hFile)
FileClose($hFile)

$timer1 = TimerInit()
$iRes1 = ($sText1 == $sText2)
$timer1 = Round(TimerDiff($timer1), 2) & ' msec'


$timer2 = TimerInit()
$iRes2 = StringCompare($sText1, $sText2, 1)
$timer2 = Round(TimerDiff($timer2), 2) & ' msec'

MsgBox(0, "Yes", $iRes1 & @Tab & ', Time ' & $timer1 & @LF & $iRes2 & @Tab & ', Time ' & $timer2)