Historically, yes. But, that'd be like saying Apple's best product was the original Macintosh (or whatever product you believe was their most transformative). I can certainly appreciate a historical view of looking at things, but it's just not how I view things. Simply put, there's nothing at Epcot today that comes close.
Understand, I'm not saying one way's right or wrong, just that we differ in our perspectives. Cheers!