Would you have drawn here?

Here's a game that just ended today (I mostly play online/correspondence chess). In the final position, my opponent offered me a draw. I considered the position for about a half an hour and concluded the final outcome was 'unclear' and I accepted the draw. Did I do that prematurely or based on the position did I make the right choice?

would have played: dxc6 RxRd2; RxRd2+ Kc8 or Ke8; cxb7...protected by the Knight. I wouuld have continued to play.

Good analysis phyxius, except it's Black to move.

I think black is better here and accepting draw was incorrect.

*edit*

LOL well, I've just spent half an hour looking at the position and now I'm not so sure! -- I think you should have played on because it's an interesting endgame... but you're quite right, IMO it's unclear!