As per the January 21 Pro Wrestling Observer Newsletter, the time allotment estimates for each match of the 2013 Royal Rumble are as follows:
–Pre-Show Royal Rumble qualifier match: Undetermined time limit
–Divas title match that has not yet been determined earmarked as 10:00 segment (intros, match, post-match all included)
–Kane & Bryan vs. Sandow & Rhodes for 10:00
–Show vs. Del Rio for 20:00
–Punk vs. Rock for 30:00
–Royal Rumble 30-man match for 70:00 total
Also, the Observer reports:
“At the point of the script, none of the winners were listed nor were the participants in the Rumble finalized. I’m sure they’ll be tweaked but that also indicates that no new matches such as Miz vs. Cesaro or Barrett vs. somebody for the secondary titles are at this point scheduled on the show, meaning they’re all scheduled for the Rumble. Usually when it comes to the outside guest additions, usually wrestlers from the past, the decision isn’t made until the last week and they are called at the last minute. That’s one of the reasons sometimes they get turned down because some of the guys who aren’t in top shape and don’t need the payday don’t want to appear unless they’ve had time to get into a semblance of shape.”