That's kinda where I'm at with it.
Havoc's best was 95-1999, and his highs are higher than Alc's highs. Alc has easily been better ~2000 - present day, and has better range. Arguments can be made that due to longevity, Alc is better.
Alc does not have a beat better than Shook Ones Part II or Eye for an Eye, for example. You can argue that Keep it Thoro is alc's "Shook Ones" but Shook Ones still clears. Meanwhile for someone like Preemo or RZA, it can def be argued that NYSOM or CREAM is equal or better than Shook Ones.