A curiosity regarding Wrestlemania 10. If the plan in mid-1993 was for Lex Luger to win the WWF Title from Yokozuna at Wrestlemania, why the double-winner booking at the Royal Rumble and double title defense at WMX? We hear the urban legend about Luger blabbing about the title win and having the booking changed as a result, but what was the original intent with the dual main events? Just an experiment? Or was the Luger title win really never set in stone leading up to the show?
It was never set in stone. They wanted Luger to chase the title for longer, but then they were waffling as usual and went with Bret instead. As for the co-mains, here’s Meltzer after Royal Rumble 94:
In hindsight, the idea of the tie in the Rumble leading to the two title matches on the same show is a good one. This show's biggest draw is not any matches, but the name "Wrestlemania," as evidenced by the show selling out in just a few days, before any matches had even been announced. However, neither Yokozuna vs. Luger or Yokozuna vs. Hart on their own is a box office bonanza as a main event. Luger's popularity has cooled considerably since SummerSlam, and even that show, one of the most well promoted cards in history and with Luger riding a wave of publicity that should have but didn't make him the No. 1 name in the business, did a disappointing buy rate. While not as focused as a singular title main event, there is no title main event that is ready to knock them dead at the box office so selling intrigue may hide the fact that neither match on their own is a killer at the box office.
So basically they didn’t have faith in Luger headlining alone.