These are not shopping in the same aisle. The Forte is 18 Nm of Asetek industrial servo, the base most Asetek buyers settle on, with build quality that is on a different level to the mainstream - but it costs over three times what the R9 V3 does. The MOZA is the value benchmark at the entry tier, a 9 Nm base that competes with far pricier hardware on feel and scores higher on our overall rubric thanks to its value and software.
So the comparison is really about which tier you are in. If you want Asetek's engineering-led build and 18 Nm of headroom, and the budget is there, the Forte is a lovely bit of hardware and the natural middle rung of that line. If you are choosing a first real direct drive base and value matters, the R9 V3 gets you most of the everyday experience for a fraction of the money, and leaves the MOZA ladder open above you.
There is not much point pretending the Forte and the R9 V3 are rivals - one is an enthusiast mid-flagship, the other an entry-tier value pick. Decide whether you are spending £820 or £260, and that answers it. Both are good at their jobs; they are just different jobs.