I actually disagree with this.
1. Undertaker's title reign in 1997 was pretty good, and he had quite a few great defenses against Steve Austin, Mankind, and Bret Hart.
2. I'm not too sure what you're referring to when you say records or numbers, but from what I understand, Taker was and is a draw.
3. His original feud with Kane is my all time favorite feud. However, don't forget about his feuds with Shawn Michaels (the original from 1997-1998), Mankind, and Steve Austin (Come on, one of the most controversial angles ever took place in that feud in 1998).
4. I will agree that I think the streak won't end though.