"Better" depends on what you value. Both defined the sixth generation (1998–2006).
Strengths: Huge library (7,900+ games), strong 3rd-party support, affordable, CD format, mature marketing.
Weaknesses: No built-in online, jagged polygons, load times, memory cards required.
Strengths: First console with built-in modem (56k), innovative VMU memory card, arcade-perfect ports (NAOMI), VGA output, ahead-of-time graphics.
Weaknesses: Short lifespan (1998–2001), GD-ROM piracy, limited 3rd-party (EA absent), no DVD playback, Sega's financial collapse.
Many gamers own both — they complement each other.