On paper, this is the best card since I've been a fan. Can't see how any card could be "much bigger" honestly. Aldo vs McGregor is the biggest fight(hype-wise) you can make in MMA currently, outside of Holm vs Rousey II possibly. Neither guy is a massive star, but Weidman vs Rockhold is the best matchup in a MW title fight ever imo. Then you have Jacare vs Romero which is about as sick of a title eliminator as you'll ever see, Nelson vs Maia which is a compelling matchup, despite the potential to be a snoozefest, and Holloway vs Stephens which can't help but be an exciting fight for as long as it lasts. The only card I can think of that compares top to bottom is UFC 100. Even if there's a few more that are comparable to it, nothing is going to be much better. If you're talking about big in terms of sales, I'll be shocked if this isn't top 5 all-time in terms of sales. If it were happening during the height of PPV sales, it would be guaranteed top 3.