I'd go on my rant about Angle actually being an outright bad and repetitive wrestler for half of his career, but no one wants to read that again. If this were just Kurt Angle's career from 1999-2003 or 2004 we were talking about, this could actually be a close contest (remember how great 2001 babyface Kurt Angle was, and how the WWF completely destroyed his momentum post-title win in, I shyt you not, about 3 weeks?). But we have to take into account everything he did after his neck and body started to permanently deteriorate and he lost all sense of match construction, so this is a no contest.
Austin was never less that really good for most of his time in prominence, started hitting "great" around 1994 or so, and was no less than great in all facets of the game from Survivor Series 1996 to the end of his career. That's taking into account the neck injury that forced him to completely change his style and severely reduce his bumping (I recently rewatched his Over the Limit 1998 title match with Dude Love, and I think he takes 3 back bumps max in a 23 minute or so match. It may have actually been zero without going back to look). And even after that, once he got the proper neck fusion done he came back, had killer matches with basically everyone, put on one of the single most important matches in wrestling history, completely changed his role and character and STILL killed it, and basically beat himself into the ground carrying the promotion during arguably the biggest (or at least most historically significant) creative brainfart of all time. Austin's career and run on top was shorter than everyone realizes (14 years without subtracting time for injury layoffs and walkouts, and 5 years or so without subtraction respectively), but that's because basically no one else save for The Rock did as much with his time on top.
If you're not picking Austin, I question why you even follow wrestling.