So, taking this slightly further...you would suggest (I think) that unsuspended, high-mass turntables in general are going to have the same overall sound (over-generalizing, I know), and most of the difference is going to be in the cartridge and, perhaps, how well it can be set up. Comparisons of those two may have less of a point.
Bonzo and Mike already added their point of view, underlining,
that a solid turntable is the base to hear differences between tonearms and cartridges.
I am using SME 3012r, FR64s or Sorane TA-1/TA-1L tonearms to compare turntables, as I have more than one of this tonearms.
It is relatively easy to hear the difference of the turntables as well as their level of quality.
A TechDAS AF5P will not perform like a AF3, but even the AF3 will be outperformed by the AF3P and so on, using same arm and cart.
But some might prefer the SME3012R plus vdh Gran Cru combination on a AF5P versus a Sorane TA-1 plus Ortofon Verismo on AF3.
And than it will be again a jump in resolution / blackness to compare both combinations on AF3P
AF3P is a great turntable, but it only performs best, if a good and solid Rack/Base is given.
(In my case an Accordion i4L active base on an Artesania Rack) If you cannot provide a solid, heavy base, you might choose the "S" version with Gel damping, otherwise I would prefer the massive feets.
In your case both turntables will be a good base for any tonearm / cartridge combination and will get you the difference of both.
I know, I repeat myself, but with a given budget, I would choose the better deal on turntable, invest the saved money to get the best tonearm / Cart combination I can afford.
For instance I just got the customized AF3P tonearm base for my Durand Tosca from Japan and I am looking forward to choose a nice mating Cart (Ortofon Verismo or Anna or Lyra Etna lamda or Etsuro Gold are waiting). I like on my AF3P the vintage FR64s or FR66s tonearms in combination with Kuzma Tigereye, combining a Glanz 124 or the newer 1200 Tonarm with a Ortofon SPU Century is fun, the AS Axiom with the Phasemation PP-2000 is a great combination as well, SME3012R with vdh Gran Cru is well described in this forum, Ikeda 407 was a nice mate with my EMT Novel, Schroeder CB-1 is great with Soundsmith Hyperion...
What I mean is, there are many arm/cart combinations out there, which could fit your taste and gear, that I would spent more time to choose and try out than for the decision between the 2 named turntables