With a modern, excellently cut cushion IMO, no. My best friend has a gorgeous ACA round from Whiteflash. I have a modern cushion brilliant from ERD. Both are about the same size, and both sparkle beautifully. When next to each other they both light up, and the sparkles are different, but I don't think one really outshines the other per se.
Having both an excellently cut RB and cushion, my opinion is that they both sparkle a ton, but the sparkle is different. It''s like asking if you prefer vanilla or chocolate.