I just want to point out that Batman has beaten guys like Solomon Grundy, Superman, and only once did Bane break his back, in which case Batman ended up coming back and beating him anyways. Not saying Batman SHOULD win, Im only saying that some of his wins have been over heavier hitters than anything Kraven has overcome.
Batman has never beaten Superman
At least get your facts straight.
And the incarnations of Grundy that Batman has beaten, has been the low powered ones. Kraven has taken down opponents more impressive than that.
Also, any heavy hitters that Batman has actually beaten, he has beaten through trickery, by being prepared. In this particular match, Kraven is the one that's prepared, and Batman is the one that's being surprised.