Well that depends on whether or not you've played any of it. Remember that the updates for Max are 1 for every 2 for Kate, so if you're comparing by the rate of content for BB, then I'd say it's about 0.3 or 0.4 BB content wise for Max.
There's less overall development toward Max getting to do things with the various women available, and a bit more devoted to integrating his side into the game world.
Going back to whether or not you've played any yet, I'd say probably wait until next month's free/Offline release at the earliest if Max is all you're interested in.
Saying that, I do recommend at least playing the game to get to grips with how the game plays/works, regardless of Max or Kate.