NZL really had no chance to win, coming in on PORT, had to gybe to get around for the reaching leg to finish. SWE just needed to go wide and give NZL room.
No, coming into the final rounding mark NZ was on starboard tack, and SWE was on port. They were nearly even but NZ needed to gybe to round the mark.
It wasn't a matter of enough room - simply a starboard/port situation. Apparently, the umpires felt that if NZ had not crash-gybed (or rounded up), she would have hit SWE.
I thought that SWE needed to go a bit further before their last gybe, so they'd have room to take NZ's transom at the mark and roll NZ with speed. They didn't, and lost the protest.